Declarative config authenticator PoC

[zeitlinger]

Based on open-telemetry/opentelemetry-configuration#275

PoC implementation for open-telemetry/opentelemetry-configuration#257

Spec issue: open-telemetry/opentelemetry-specification#1344

[trask]

I think the vision was that you would be able to use DeclarativeConfigProperties.getComponentLoader()?

[zeitlinger]

this is a different type of loader - it's specifically for declarative config components - so it should probably called that way

The underlying problem is that the exporters need to be able to create a declarative component

[codecov]

Codecov Report

❌ Patch coverage is 75.60976% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.96%. Comparing base (9631f54) to head (8e15034).
⚠️ Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
...incubator/config/EmptyComponentProviderLoader.java	0.00%	4 Missing ⚠️
...veConfigPropertiesWithComponentProviderLoader.java	80.00%	3 Missing ⚠️
...orter/otlp/internal/OtlpDeclarativeConfigUtil.java	81.81%	1 Missing and 1 partial ⚠️
.../incubator/config/DeclarativeConfigProperties.java	0.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (75.60%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7605      +/-   ##
============================================
- Coverage     89.99%   89.96%   -0.04%     
- Complexity     7079     7092      +13     
============================================
  Files           803      805       +2     
  Lines         21419    21452      +33     
  Branches       2086     2089       +3     
============================================
+ Hits          19276    19299      +23     
- Misses         1479     1488       +9     
- Partials        664      665       +1     

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