Add modules for OTEL

[adinauer]

#skip-changelog

📜 Description

New gradle modules to contain the

• sentry-opentelemetry-agent: OTEL Java Agent producing an agent JAR that contains Sentry and adds Sentry to the bootstrap classloader.
• sentry-opentelemetry-agentcustomization: Config classes for configuring the Java OTEL agent and hooking up our SpanProcessor
• sentry-opentelemetry-core: Our SpanProcessor and propagator will be contained here

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 0ee226e

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	292.88 ms	336.08 ms	43.21 ms
Size	1.73 MiB	2.32 MiB	609.88 KiB

[codecov-commenter]

Codecov Report

Base: 80.36% // Head: 80.36% // No change to project coverage 👍

Coverage data is based on head (0ee226e) compared to base (9528661).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##             feat/otel    #2345   +/-   ##
============================================
  Coverage        80.36%   80.36%           
  Complexity        3670     3670           
============================================
  Files              290      290           
  Lines            13712    13712           
  Branches          1801     1801           
============================================
  Hits             11020    11020           
  Misses            2001     2001           
  Partials           691      691           

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[romtsn]

I guess we'd need some docs or something around that, so people don't expect to add sentry and that it supports OTel out of the box

[adinauer]

Yes, there'll need to be some OTEL specific docs that suggest how you can combine Sentry and OTEL, e.g. by using our agent JAR. I already have it on the TODOs here #2327