Add accepted/refused/failed profile sample metrics to the receivers

[dmathieu]

This adds obs metrics to the profiles receivers.

[codspeed-hq]

CodSpeed Performance Report

Merging #14226 will degrade performances by 28.91%

_{Comparing dmathieu:receiverhelper-profiles-metrics (6bfb0f5) with main (2e5bb6d)}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

❌ 3 regressions
✅ 56 untouched
⏩ 20 skipped¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	BenchmarkTraceSizeBytes	309 µs	434.7 µs	-28.91%
❌	BenchmarkTracesToProto2k	69 µs	95.8 µs	-27.97%
❌	BenchmarkLogsToProto2k	45 µs	63.1 µs	-28.76%

Footnotes

1. 20 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.15%. Comparing base (2e5bb6d) to head (6bfb0f5).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #14226      +/-   ##
==========================================
- Coverage   92.15%   92.15%   -0.01%     
==========================================
  Files         668      668              
  Lines       41513    41585      +72     
==========================================
+ Hits        38257    38323      +66     
- Misses       2219     2223       +4     
- Partials     1037     1039       +2     

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[rogercoll]

small nit