Add tracing for colibri requests

[JulianGCalderon]

This PR adds tracing for the handling of colibri requests.

Related to the tracing backend GSoC project: https://summerofcode.withgoogle.com/programs/2026/projects/GseggmSv

[jitsi-jenkins]

Hi, thanks for your contribution!
If you haven't already done so, could you please make sure you sign our CLA (https://jitsi.org/icla for individuals and https://jitsi.org/ccla for corporations)? We would unfortunately be unable to merge your patch unless we have that piece :(.

[bgrozev]

jenkins add to whitelist

[codecov]

Codecov Report

❌ Patch coverage is 7.40741% with 25 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.40%. Comparing base (b64b530) to head (e393814).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...main/java/org/jitsi/jicofo/jibri/JibriSession.java	5.55%	16 Missing and 1 partial ⚠️
...rc/main/kotlin/org/jitsi/jicofo/jibri/BaseJibri.kt	11.11%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1301      +/-   ##
==========================================
+ Coverage   50.47%   51.40%   +0.92%     
==========================================
  Files         131      132       +1     
  Lines        8251     8445     +194     
  Branches     1261     1289      +28     
==========================================
+ Hits         4165     4341     +176     
- Misses       3493     3494       +1     
- Partials      593      610      +17     

Files with missing lines	Coverage Δ
...rc/main/kotlin/org/jitsi/jicofo/jibri/BaseJibri.kt	8.06% <11.11%> (+0.65%)	⬆️
...main/java/org/jitsi/jicofo/jibri/JibriSession.java	39.29% <5.55%> (-2.55%)	⬇️

... and 13 files with indirect coverage changes

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