add declarative config for log throttling

[the-clam]

draft changes for #7178; just tagging for reference as the changes incomplete

[codecov]

Codecov Report

❌ Patch coverage is 42.00000% with 58 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.97%. Comparing base (c67641c) to head (8509675).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
...lp/http/logs/OtlpHttpLogRecordExporterBuilder.java	0.00%	7 Missing ⚠️
...lp/http/metrics/OtlpHttpMetricExporterBuilder.java	0.00%	7 Missing ⚠️
...r/otlp/http/trace/OtlpHttpSpanExporterBuilder.java	0.00%	7 Missing ⚠️
...er/otlp/logs/OtlpGrpcLogRecordExporterBuilder.java	0.00%	7 Missing ⚠️
...er/otlp/metrics/OtlpGrpcMetricExporterBuilder.java	0.00%	7 Missing ⚠️
...porter/otlp/trace/OtlpGrpcSpanExporterBuilder.java	0.00%	7 Missing ⚠️
...orter/otlp/internal/OtlpDeclarativeConfigUtil.java	33.33%	4 Missing and 2 partials ⚠️
...ry/exporter/internal/grpc/GrpcExporterBuilder.java	58.33%	5 Missing ⚠️
...ry/exporter/internal/http/HttpExporterBuilder.java	54.54%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7838      +/-   ##
============================================
- Coverage     90.11%   89.97%   -0.15%     
- Complexity     7224     7232       +8     
============================================
  Files           821      821              
  Lines         21809    21906      +97     
  Branches       2136     2144       +8     
============================================
+ Hits          19654    19709      +55     
- Misses         1486     1526      +40     
- Partials        669      671       +2     

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