feat: interactive experience for the cdk flags command (#774)

#### This uses the 'enquirer' npm package to allow users to call `cdk
flags -interactive`, see a list of Menu options, and configure their
feature flags.
---
By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache-2.0 license

Author: vivian12300

.projenrc.ts

@@ -1152,6 +1152,7 @@ const cli = configureProject(
       'chalk@^4',
       'chokidar@^3',
       'decamelize@^5', // Non-ESM
+      'enquirer',
       'fs-extra@^9',
       'glob',
       'minimatch',

packages/@aws-cdk/cli-lib-alpha/THIRD_PARTY_LICENSES

@@ -10913,7 +10913,7 @@ Apache License
 
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-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/abort-controller/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/abort-controller/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -11118,7 +11118,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/config-resolver/v/4.1.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/config-resolver/v/4.1.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -11323,7 +11323,7 @@ Apache License
 
 ----------------
 
-** @smithy/core@3.7.2 - https://www.npmjs.com/package/@smithy/core/v/3.7.2 | Apache-2.0
+** @smithy/core@3.8.0 - https://www.npmjs.com/package/@smithy/core/v/3.8.0 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -11529,7 +11529,7 @@ Apache License
 
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-** @smithy/[email protected].6 - https://www.npmjs.com/package/@smithy/credential-provider-imds/v/4.0.6 | Apache-2.0
+** @smithy/[email protected].7 - https://www.npmjs.com/package/@smithy/credential-provider-imds/v/4.0.7 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -11734,7 +11734,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/eventstream-codec/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/eventstream-codec/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -11940,7 +11940,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].2 - https://www.npmjs.com/package/@smithy/eventstream-serde-config-resolver/v/4.1.2 | Apache-2.0
+** @smithy/[email protected].3 - https://www.npmjs.com/package/@smithy/eventstream-serde-config-resolver/v/4.1.3 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -12146,7 +12146,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/eventstream-serde-node/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/eventstream-serde-node/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -12352,7 +12352,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/eventstream-serde-universal/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/eventstream-serde-universal/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -12558,7 +12558,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].0 - https://www.npmjs.com/package/@smithy/fetch-http-handler/v/5.1.0 | Apache-2.0
+** @smithy/[email protected].1 - https://www.npmjs.com/package/@smithy/fetch-http-handler/v/5.1.1 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -12763,7 +12763,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/hash-node/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/hash-node/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -12968,7 +12968,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/hash-stream-node/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/hash-stream-node/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -13583,7 +13583,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/middleware-content-length/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/middleware-content-length/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -13788,7 +13788,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].17 - https://www.npmjs.com/package/@smithy/middleware-endpoint/v/4.1.17 | Apache-2.0
+** @smithy/[email protected].18 - https://www.npmjs.com/package/@smithy/middleware-endpoint/v/4.1.18 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -13993,7 +13993,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].18 - https://www.npmjs.com/package/@smithy/middleware-retry/v/4.1.18 | Apache-2.0
+** @smithy/[email protected].19 - https://www.npmjs.com/package/@smithy/middleware-retry/v/4.1.19 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -14199,7 +14199,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].8 - https://www.npmjs.com/package/@smithy/middleware-serde/v/4.0.8 | Apache-2.0
+** @smithy/[email protected].9 - https://www.npmjs.com/package/@smithy/middleware-serde/v/4.0.9 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -14405,7 +14405,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/middleware-stack/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/middleware-stack/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -14610,7 +14610,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].3 - https://www.npmjs.com/package/@smithy/node-config-provider/v/4.1.3 | Apache-2.0
+** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/node-config-provider/v/4.1.4 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -14815,7 +14815,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].0 - https://www.npmjs.com/package/@smithy/node-http-handler/v/4.1.0 | Apache-2.0
+** @smithy/[email protected].1 - https://www.npmjs.com/package/@smithy/node-http-handler/v/4.1.1 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -15020,7 +15020,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/property-provider/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/property-provider/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -15225,7 +15225,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].2 - https://www.npmjs.com/package/@smithy/protocol-http/v/5.1.2 | Apache-2.0
+** @smithy/[email protected].3 - https://www.npmjs.com/package/@smithy/protocol-http/v/5.1.3 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -15431,7 +15431,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/querystring-builder/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/querystring-builder/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -15637,7 +15637,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/querystring-parser/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/querystring-parser/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -15843,7 +15843,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].6 - https://www.npmjs.com/package/@smithy/service-error-classification/v/4.0.6 | Apache-2.0
+** @smithy/[email protected].7 - https://www.npmjs.com/package/@smithy/service-error-classification/v/4.0.7 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -16049,7 +16049,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/shared-ini-file-loader/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/shared-ini-file-loader/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -16254,7 +16254,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].2 - https://www.npmjs.com/package/@smithy/signature-v4/v/5.1.2 | Apache-2.0
+** @smithy/[email protected].3 - https://www.npmjs.com/package/@smithy/signature-v4/v/5.1.3 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -16459,7 +16459,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].9 - https://www.npmjs.com/package/@smithy/smithy-client/v/4.4.9 | Apache-2.0
+** @smithy/[email protected].10 - https://www.npmjs.com/package/@smithy/smithy-client/v/4.4.10 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -16665,7 +16665,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].1 - https://www.npmjs.com/package/@smithy/types/v/4.3.1 | Apache-2.0
+** @smithy/[email protected].2 - https://www.npmjs.com/package/@smithy/types/v/4.3.2 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -16871,7 +16871,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/url-parser/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/url-parser/v/4.0.5 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -18307,7 +18307,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].25 - https://www.npmjs.com/package/@smithy/util-defaults-mode-node/v/4.0.25 | Apache-2.0
+** @smithy/[email protected].26 - https://www.npmjs.com/package/@smithy/util-defaults-mode-node/v/4.0.26 | Apache-2.0
                                 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -18513,7 +18513,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].6 - https://www.npmjs.com/package/@smithy/util-endpoints/v/3.0.6 | Apache-2.0
+** @smithy/[email protected].7 - https://www.npmjs.com/package/@smithy/util-endpoints/v/3.0.7 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -18923,7 +18923,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/util-middleware/v/4.0.4 | Apache-2.0
+** @smithy/[email protected].5 - https://www.npmjs.com/package/@smithy/util-middleware/v/4.0.5 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -19128,7 +19128,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].6 - https://www.npmjs.com/package/@smithy/util-retry/v/4.0.6 | Apache-2.0
+** @smithy/[email protected].7 - https://www.npmjs.com/package/@smithy/util-retry/v/4.0.7 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -19333,7 +19333,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].3 - https://www.npmjs.com/package/@smithy/util-stream/v/4.2.3 | Apache-2.0
+** @smithy/[email protected].4 - https://www.npmjs.com/package/@smithy/util-stream/v/4.2.4 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -20153,7 +20153,7 @@ Apache License
 
 ----------------
 
-** @smithy/[email protected].6 - https://www.npmjs.com/package/@smithy/util-waiter/v/4.0.6 | Apache-2.0
+** @smithy/[email protected].7 - https://www.npmjs.com/package/@smithy/util-waiter/v/4.0.7 | Apache-2.0
 Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/