[Java Agent] Implement protection domain caching

[kumargu]

This PR adds a cache of protection domain mapped to a Permission collection. Such a caching is useful to fasten the implies call (from socket and file interceptor) to avoid re-evaluation of permissions in every call.

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[kumargu]

cc @andrross @cwperks @reta

[github-actions]

❌ Gradle check result for 8f36359: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[andrross]

The caching logic looks good in general. My comments can be addressed as a follow up.

[github-actions]

❌ Gradle check result for 8f36359: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[kumargu]

sorry, @andrross could you please review again. i had accidentally removed some comments (added them back).

[github-actions]

❕ Gradle check result for da3fb2d: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.

Project coverage is 72.37%. Comparing base (c91cdcb) to head (da3fb2d).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...va/org/opensearch/secure_sm/policy/PolicyFile.java	0.00%	15 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17832      +/-   ##
============================================
- Coverage     72.46%   72.37%   -0.09%     
+ Complexity    66502    66449      -53     
============================================
  Files          5408     5408              
  Lines        308080   308157      +77     
  Branches      44720    44735      +15     
============================================
- Hits         223239   223027     -212     
- Misses        66536    66864     +328     
+ Partials      18305    18266      -39     

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