(#2124) Add ability to initialize without logging

[AdmiringWorm]

This PR makes changes to the API initialization method to allow
Chocolatey to allow the initialization to happen without enabling
logging.
Additionally changes have been made to allow adding extra loggers to be
added without overriding the logging
to the applications main chocolatey.log file.

These changes were necessary to allow programs (like ChocolateyGUI)
to add its own logging infrastructure without disabling logging
to the main log file.

fixes #2124

[gep13]

LGTM!

[gep13]

@AdmiringWorm any thoughts on why this is failing the ubuntu build?

[vexx32]

Seems the nuget restore failed there with SSL issues, similar results for all dependent packages:

                 [exec] Restoring NuGet package NUnit.Runners.2.6.4.
                 [exec] WARNING: Unable to find version '2.6.4' of package 'NUnit.Runners'.
                 [exec]   https://api.nuget.org/v3/index.json: Unable to load the service index for source https://api.nuget.org/v3/index.json.
                 [exec]   The SSL connection could not be established, see inner exception.
                 [exec]   Authentication failed, see inner exception.
                 [exec]   Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED
                 [exec]     at /build/mono-6.12.0.122/external/boringssl/ssl/handshake_client.c:1132
                 [exec]   https://www.nuget.org/api/v2/: Unable to load the service index for source https://www.nuget.org/api/v2/.
                 [exec]   The SSL connection could not be established, see inner exception.
                 [exec]   Authentication failed, see inner exception.
                 [exec]   Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED
                 [exec]     at /build/mono-6.12.0.122/external/boringssl/ssl/handshake_client.c:1132

[gep13]

@vexx32 yip, saw the same thing, and was just pinging @AdmiringWorm about it on Slack 😄

[gep13]

@vexx32 @AdmiringWorm I have opened a PR attempting to address this here: #2314 Can you both have a review, and let me know what you think? Thanks!

[gep13]

LGTM!