Add setMeterConfigurator support to MeterProvider

[fandreuz]

Fixes #7051

[fandreuz]

I need to add a bunch more tests, I just wanted to check in to see if the approach is sound. The idea is to have a sort of aggregatorHolder for all storage types, which can be swapped with a DropAggregator according to the current state of the SdkMeter. The complexity lies in how to do this without having partial updates which may result in unexpected recordings.

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 89.89%. Comparing base (cc7d085) to head (7ab9b3a).

Files with missing lines	Patch %	Lines
...nternal/state/DefaultSynchronousMetricStorage.java	90.62%	1 Missing and 2 partials ⚠️
...try/sdk/metrics/internal/SdkMeterProviderUtil.java	75.00%	2 Missing ⚠️
...rics/internal/state/AsynchronousMetricStorage.java	87.50%	0 Missing and 1 partial ⚠️
...sdk/metrics/internal/state/EmptyMetricStorage.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7346      +/-   ##
============================================
+ Coverage     89.87%   89.89%   +0.01%     
- Complexity     6899     6917      +18     
============================================
  Files           786      786              
  Lines         20793    20833      +40     
  Branches       2026     2031       +5     
============================================
+ Hits          18687    18727      +40     
+ Misses         1465     1462       -3     
- Partials        641      644       +3     

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[fandreuz]

Hi @jack-berg, any comments on this? I think it's ready for a first round of review

[jack-berg]

Hey @fandreuz - sorry for the delay. I'm swamped with internal stuff right now. Trying to get in a spot to be able to spend more time doing code reviews for otel next week.