fix(sdk-logs): hide internal methods with internal shared state

[legendecas]

Which problem is this PR solving?

This change hides the internal methods with a LoggerProviderSharedState struct.

Short description of the changes

• Removes the configuration on Logger instances as the spec explicitly states that "Loggers should not be responsible for configuration" (https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/sdk.md#logger).
• Removes the redundant MultiLogRecordProcessor with a single NoopLogRecordProcessor when no LogRecordProcessor is registered. This can be replaced by a single NoopLogrecordProcessor instead.
• Fixes that MultiLogRecordProcessor didn't pass the second argument context to its processors' onEmit.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

This un-exposes the internal methods as public so it is a breaking change.

How Has This Been Tested?

• Existing tests all passed with internal refactoring.

Checklist:

• Followed the style guidelines of this project
• Unit tests have been added
• Documentation has been updated

[codecov]

Codecov Report

Merging #3865 (2b945ba) into main (f2fc0d8) will increase coverage by 0.29%.
The diff coverage is 100.00%.

❗ Current head 2b945ba differs from pull request most recent head 98da36a. Consider uploading reports for the commit 98da36a to get more accurate results

@@            Coverage Diff             @@
##             main    #3865      +/-   ##
==========================================
+ Coverage   92.30%   92.60%   +0.29%     
==========================================
  Files         328      295      -33     
  Lines        9385     8249    -1136     
  Branches     1993     1712     -281     
==========================================
- Hits         8663     7639    -1024     
+ Misses        722      610     -112     

Files Changed	Coverage
experimental/packages/sdk-logs/src/LogRecord.ts	100.00%
experimental/packages/sdk-logs/src/Logger.ts	100.00%
...perimental/packages/sdk-logs/src/LoggerProvider.ts	100.00%
...l/packages/sdk-logs/src/MultiLogRecordProcessor.ts	100.00%
experimental/packages/sdk-logs/src/config.ts	100.00%
...ages/sdk-logs/src/export/NoopLogRecordProcessor.ts	100.00%
...sdk-logs/src/internal/LoggerProviderSharedState.ts	100.00%

[github-actions]

This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[pichlermarc]

We may want to remove LogRecord and Logger from the exports in this file. Logger should only be be aquired though LoggerProvider, and the only api.LogRecord should be passed to emit IIUC, so no need to let users create instances (now impossible anyway as we don't export LoggerProviderSharedState) 🙂

[legendecas]

Thanks for suggestion, removed!

[pichlermarc]

Thank you for working on this. 🙂