[DOC] Update Jaeger tutorial to use OTLP Exporter

[hgaol]

For #3925 , Update Jaeger tutorial to use OTLP Exporter.

Changes

Please provide a brief description of the changes here.

• Updated the README.md for Jaeger tutorial
• Updated Program.cs for Jaeger tutorial.
• Added Jaeger tutorial example project into OT solution.

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

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: hgaol / name: Han Gao (6b43138)

[reyang]

Looks solid 👍

[hgaol]

Hi @reyang and @Kielek , thanks for your review and approve this PR. Since there're some errors in CI about HttpClient not found for net472/net48, I've submitted a new commit and updated the .csproj file like this. Don't know if it's a good practice or I can just revert the changes about adding the getting-started-jeager project to the solution.

failed CI action: https://github.com/open-telemetry/opentelemetry-dotnet/actions/runs/3538390359

[codecov]

Codecov Report

Merging #3940 (4bc5d74) into main (e376aef) will increase coverage by 0.06%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3940      +/-   ##
==========================================
+ Coverage   85.18%   85.25%   +0.06%     
==========================================
  Files         287      287              
  Lines       11026    11026              
==========================================
+ Hits         9393     9400       +7     
+ Misses       1633     1626       -7     

Impacted Files	Coverage Δ
...ZPages/Implementation/ZPagesExporterEventSource.cs	56.25% <0.00%> (-6.25%)	⬇️
...tpListener/Internal/PrometheusCollectionManager.cs	73.62% <0.00%> (-2.20%)	⬇️
src/OpenTelemetry/BatchExportProcessor.cs	84.11% <0.00%> (+1.86%)	⬆️
...nTelemetry/Internal/OpenTelemetrySdkEventSource.cs	82.53% <0.00%> (+2.38%)	⬆️
...ter.ZPages/Implementation/ZPagesActivityTracker.cs	100.00% <0.00%> (+2.85%)	⬆️
...lemetry/Internal/SelfDiagnosticsConfigRefresher.cs	89.42% <0.00%> (+2.88%)	⬆️
...emetry.Api/Internal/OpenTelemetryApiEventSource.cs	82.35% <0.00%> (+2.94%)	⬆️

[hgaol]

rebased all main commits. I've tested locally and think/hope there's no CI error..

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: hgaol / name: Han Gao (08eab3b, 6fe220e, 29872a9)

[reyang]

@open-telemetry/dotnet-maintainers this looks good to merge.

[CodeBlanch]

@alanwest @utpilla This change piqued my interest. We don't specify targets explicitly. When I build this project locally I get output for net7.0, net6.0, net462, net47, net471, net472, & net48. It is interesting that net462, net47, & net471 don't also need this reference 🤔 But it raises a question: Should we specify targets on these docs projects?

[CodeBlanch]

Disregard! I found the targets defined here: https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/docs/Directory.Build.props#L8-L10