[logging] UseOpenTelemetry extension & WithLogging default behavior

[CodeBlanch]

Follow-up to #4958
Fixes #4985
Relates to #4433

Changes

• Adds ILoggingBuilder.UseOpenTelemetry experimental APIs. This brings full parity w.r.t. IServiceCollection / IServiceProvider that we have with metrics & tracing to logging.
• Updates OpenTelemetryBuilder.WithLogging experimental API to automatically register the ILoggerProvider integration. This mirrors what WithMetrics does (for IMetricsListener integration).

Merge requirement checklist

• CONTRIBUTING guidelines followed (nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

Merging #5072 (6051870) into main (4f73d2b) will increase coverage by 0.28%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

❗ Current head 6051870 differs from pull request most recent head d8833d2. Consider uploading reports for the commit d8833d2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5072      +/-   ##
==========================================
+ Coverage   83.02%   83.31%   +0.28%     
==========================================
  Files         296      296              
  Lines       12315    12320       +5     
==========================================
+ Hits        10225    10264      +39     
+ Misses       2090     2056      -34     

Flag	Coverage Δ
unittests	83.31% <100.00%> (+0.28%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...lemetry.Extensions.Hosting/OpenTelemetryBuilder.cs	100.00% <100.00%> (ø)
...try/Logs/ILogger/OpenTelemetryLoggingExtensions.cs	95.23% <100.00%> (+0.50%)	⬆️

... and 5 files with indirect coverage changes