Add debug tracing to scheduling service

[fractalwrench]

Goal

Enhance the delivery tracing by adding some extra events in the SchedulingService. If an integration test fails now it should give us a decent idea of what's going wrong.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Files

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 85.20%. Comparing base (a0cd7e9) to head (fabb99f).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...esdk/internal/delivery/debug/DeliveryTraceState.kt	53.33%	7 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1735   +/-   ##
=======================================
  Coverage   85.19%   85.20%           
=======================================
  Files         459      459           
  Lines       10447    10474   +27     
  Branches     1567     1572    +5     
=======================================
+ Hits         8900     8924   +24     
- Misses        840      843    +3     
  Partials      707      707           

Files with missing lines	Coverage Δ
...mbracesdk/internal/injection/DeliveryModuleImpl.kt	76.92% <100.00%> (+0.22%)	⬆️
...bracesdk/internal/delivery/debug/DeliveryTracer.kt	80.95% <100.00%> (+4.48%)	⬆️
...esdk/internal/delivery/intake/IntakeServiceImpl.kt	100.00% <100.00%> (ø)
...ernal/delivery/scheduling/SchedulingServiceImpl.kt	87.80% <100.00%> (+0.96%)	⬆️
...esdk/internal/delivery/debug/DeliveryTraceState.kt	53.48% <53.33%> (+3.48%)	⬆️

... and 3 files with indirect coverage changes

[bidetofevil]

LGTM