[Exporter.OpenTelemetryProtocol] User agent changed to OTel-OTLP-Exporter-Dotnet/{NuGet Package Version}

[Kielek]

Follow up to #5498

Changes

Handles following comments:

• [Instrumentation.GrpNetClient, Instrumentation.SqlCliet] set ActivitySource.Version to NuGet package version #5498 (comment) (User-Agent part, other was handled previously)
• [Instrumentation.GrpNetClient, Instrumentation.SqlCliet] set ActivitySource.Version to NuGet package version #5498 (comment)
• [Instrumentation.GrpNetClient, Instrumentation.SqlCliet] set ActivitySource.Version to NuGet package version #5498 (comment)

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, 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)

[Kielek]

@CodeBlanch, @reyang, FYI

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.52%. Comparing base (6250307) to head (b45be34).
Report is 175 commits behind head on main.

❗ Current head b45be34 differs from pull request most recent head d45c095. Consider uploading reports for the commit d45c095 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5528      +/-   ##
==========================================
+ Coverage   83.38%   85.52%   +2.13%     
==========================================
  Files         297      289       -8     
  Lines       12531    12579      +48     
==========================================
+ Hits        10449    10758     +309     
+ Misses       2082     1821     -261     

Flag	Coverage Δ
unittests	?
unittests-Instrumentation-Experimental	24.09% <ø> (?)
unittests-Instrumentation-Stable	24.13% <ø> (?)
unittests-Solution-Experimental	85.52% <100.00%> (?)
unittests-Solution-Stable	85.48% <100.00%> (?)

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

Files	Coverage Δ
...orter.OpenTelemetryProtocol/OtlpExporterOptions.cs	99.08% <100.00%> (+2.71%)	⬆️
...ent/Implementation/GrpcClientDiagnosticListener.cs	76.19% <ø> (-2.39%)	⬇️
...qlClient/Implementation/SqlActivitySourceHelper.cs	100.00% <ø> (ø)
src/OpenTelemetry/Sdk.cs	100.00% <ø> (ø)

... and 65 files with indirect coverage changes

[CodeBlanch]

LGTM