ci: pre-commit hook to populate missing legal text on files (cdklabs#326)

Make it easier to make sure that proper legal text is present on files.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: dontirun

.pre-commit-config.yaml

@@ -25,3 +25,15 @@ repos:
               ^.*.json |
               ^API.md 
           )
+  - repo: https://github.com/dontirun/text-prepender
+    rev: v0.1.0
+    hooks:
+      - id: text-prepender
+        exclude: |
+          (?x)(
+              ^.github/|
+              ^.projen/|
+              ^.mergify.yml|
+              ^.*.json |
+              ^API.md 
+          )

NOTICE

@@ -1 +1,2 @@
 Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: Apache-2.0

src/NIST-800-53/rules/dynamodb/index.ts

@@ -1 +1,5 @@
+/*
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: Apache-2.0
+*/
 export { default as nist80053DynamoDBPITREnabled } from './nist80053DynamoDBPITREnabled';

src/NIST-800-53/rules/dynamodb/nist80053DynamoDBPITREnabled.ts

@@ -1,3 +1,7 @@
+/*
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+SPDX-License-Identifier: Apache-2.0
+*/
 import { CfnTable } from '@aws-cdk/aws-dynamodb';
 import { CfnResource, Stack } from '@aws-cdk/core';