Add OpenFeign support.

[maciejwalkowiak]

📜 Description

Add OpenFeign support.

💡 Motivation and Context

#1628

💚 How did you test it?

Unit & integration tests.

📝 Checklist

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

🔮 Next steps

Update reference docs.

[codecov-commenter]

Codecov Report

Merging #1632 (e762529) into main (bb9f248) will increase coverage by 0.13%.
The diff coverage is 92.85%.

@@             Coverage Diff              @@
##               main    #1632      +/-   ##
============================================
+ Coverage     75.63%   75.76%   +0.13%     
- Complexity     2006     2017      +11     
============================================
  Files           204      206       +2     
  Lines          6980     7036      +56     
  Branches        692      699       +7     
============================================
+ Hits           5279     5331      +52     
- Misses         1365     1367       +2     
- Partials        336      338       +2     

Impacted Files	Coverage Δ
...ain/java/io/sentry/openfeign/SentryCapability.java	71.42% <71.42%> (ø)
...in/java/io/sentry/openfeign/SentryFeignClient.java	95.91% <95.91%> (ø)

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[bruno-garcia]

[bruno-garcia]

@maciejwalkowiak we'll need to add this to https://github.com/getsentry/sentry-release-registry and also to .craft.yml in this repo. Is that something you can help with too?