Add DeclarativeConfigContext

[jack-berg]

Refactor declarative config to encapsulate config context and state into a new carrier object, DeclarativeConfigContext.

Benefits:

• Cleans up Factory interface by reducing number of arguments
• Makes it easier to test because SPI loading and closeables tracking is encapsulated in an instance which can be mocked and spied. Previously these were managed via static helper methods.
• Abstracts SPI loading to a single place, making Move declarative config to permanent home #7292 easier
• ~200 fewer lines of code

[codecov]

Codecov Report

Attention: Patch coverage is 91.26214% with 9 lines in your changes missing coverage. Please review.

Project coverage is 89.86%. Comparing base (b468a2e) to head (11c7098).
Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
...incubator/fileconfig/DeclarativeConfigContext.java	70.96%	8 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7293      +/-   ##
============================================
- Coverage     90.04%   89.86%   -0.19%     
+ Complexity     6916     6890      -26     
============================================
  Files           787      786       -1     
  Lines         20864    20771      -93     
  Branches       2023     2024       +1     
============================================
- Hits          18788    18666     -122     
- Misses         1439     1463      +24     
- Partials        637      642       +5     

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[jaydeluca]

Suggested change

	* Find a registered {@link ComponentProvider} which {@link ComponentProvider#getType()} matching
	* Find a registered {@link ComponentProvider} with {@link ComponentProvider#getType()} matching