add SdkTracerProvider.setScopeConfigurator() and support

[jackshirazi]

per discussion here from PR

[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.

Project coverage is 89.89%. Comparing base (c8da020) to head (8e4eebf).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...etry/sdk/trace/internal/SdkTracerProviderUtil.java	75.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7021      +/-   ##
============================================
- Coverage     89.95%   89.89%   -0.06%     
- Complexity     6636     6660      +24     
============================================
  Files           745      748       +3     
  Lines         20010    20095      +85     
  Branches       1962     1969       +7     
============================================
+ Hits          17999    18064      +65     
- Misses         1415     1437      +22     
+ Partials        596      594       -2     

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[jackshirazi]

@open-telemetry/java-approvers any idea why the graal build is failing?

[trask]

looks like it was a sporadic issue, @laurit re-ran and it's passing now

[jack-berg]

The pattern for giving access to these experimental features has been via Sdk{Signal}ProviderUtil, a public class in an internal package, with static helper methods for reflectively accessing package private methods.

For tracing, this is SdkTracerProviderUtil.

I'd recommend adding an accessor method there as part of this PR. If you do, please add javadoc to this pointing to that method.

If you choose to punt on that, let's add a TODO to followup:

Suggested change

	// currently not public as experimental
	// TODO: add public experimental accessor in SdkTracerProviderUtil

Speaking of followups, after landing this, should open an issue to track extending metrics and logs with the same capability.

[jackshirazi]

Added the static helper, and opened #7038 for extending to metrics and logs