Fix issue of multiple instances of OpenTelemetry-Instrumentation EventSource being created

[Kielek]

Propagate changes from open-telemetry/opentelemetry-dotnet#4720

Changes

Fix issue of multiple instances of OpenTelemetry-Instrumentation EventSource being created when using more than one instrumentation for Quartz, ElasitcSearch. EF Core.
IncludeSharedDiagnosticSourceSubscriber property to include Shared internal class DiagnosticSourceSubscriber into compilation.

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• [ ] Design discussion issue #
• [ ] Changes in public API reviewed

[codecov]

Codecov Report

Merging #1362 (ef84458) into main (71655ce) will increase coverage by 0.15%.
Report is 6 commits behind head on main.
The diff coverage is 77.27%.

@@            Coverage Diff             @@
##             main    #1362      +/-   ##
==========================================
+ Coverage   73.91%   74.07%   +0.15%     
==========================================
  Files         267      258       -9     
  Lines        9615     9484     -131     
==========================================
- Hits         7107     7025      -82     
+ Misses       2508     2459      -49     

Flag	Coverage Δ
unittests	79.88% <77.27%> (?)
unittests-Exporter.Geneva	58.13% <ø> (?)
unittests-Exporter.OneCollector	89.71% <ø> (?)
unittests-Instrumentation.Process	100.00% <ø> (?)

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

Files Changed	Coverage
...Implementation/QuartzInstrumentationEventSource.cs	0.00%
...ntation/ElasticsearchInstrumentationEventSource.cs	16.66%
...searchClient/ElasticsearchClientInstrumentation.cs	100.00%
...ityFrameworkCore/EntityFrameworkInstrumentation.cs	100.00%
...ation/EntityFrameworkInstrumentationEventSource.cs	100.00%
...ation.Owin/Implementation/DiagnosticsMiddleware.cs	100.00%
....Owin/Implementation/OwinInstrumentationMetrics.cs	100.00%
...inInstrumentationMeterProviderBuilderExtensions.cs	100.00%
...Instrumentation.Quartz/QuartzJobInstrumentation.cs	100.00%

[ejsmith]

Looks like a nice improvement