**DRAFT** feature: Modern Garbage Collection Metrics Sampler

[tippmar-nr]

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Description

The what, the why and the how of your PR.

Author Checklist

• Unit tests, Integration tests, and Unbounded tests completed
• Performance testing completed with satisfactory results (if required)

Reviewer Checklist

• Perform code review
• Pull request was adequately tested (new/existing tests, performance tests)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.27313% with 13 lines in your changes missing coverage. Please review.

Project coverage is 81.43%. Comparing base (a77919e) to head (0ab84ac).

Files with missing lines	Patch %	Lines
...t/Core/Samplers/GCSamplerModernReflectionHelper.cs	76.31%	7 Missing and 2 partials ⚠️
....Agent.Extensions/Reflection/VisibilityBypasser.cs	82.60%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2838      +/-   ##
==========================================
+ Coverage   81.31%   81.43%   +0.12%     
==========================================
  Files         460      464       +4     
  Lines       29239    29461     +222     
  Branches     3231     3255      +24     
==========================================
+ Hits        23777    23993     +216     
- Misses       4669     4674       +5     
- Partials      793      794       +1     

Flag	Coverage Δ
Agent	82.34% <94.27%> (+0.12%)	⬆️
Profiler	73.33% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...wRelic/Agent/Core/Config/BootstrapConfiguration.cs	100.00% <100.00%> (ø)
...c/Agent/Core/Configuration/DefaultConfiguration.cs	89.58% <100.00%> (+0.01%)	⬆️
.../Agent/Core/Configuration/ReportedConfiguration.cs	95.74% <100.00%> (+0.01%)	⬆️
...ic/Agent/Core/DependencyInjection/AgentServices.cs	98.22% <100.00%> (+0.13%)	⬆️
...c/Agent/NewRelic/Agent/Core/Metrics/MetricNames.cs	92.15% <100.00%> (+0.28%)	⬆️
...nt/NewRelic/Agent/Core/Samplers/GCSamplerModern.cs	100.00% <100.00%> (ø)
...rc/Agent/NewRelic/Agent/Core/Samplers/GcSampler.cs	82.32% <ø> (+2.02%)	⬆️
.../NewRelic/Agent/Core/Samplers/ImmutableGCSample.cs	100.00% <100.00%> (ø)
...ent/Core/Transformers/GCSampleTransformerModern.cs	100.00% <100.00%> (ø)
....Agent.Extensions/Reflection/VisibilityBypasser.cs	81.26% <82.60%> (+0.07%)	⬆️
... and 1 more

... and 1 file with indirect coverage changes