feat: implementation for RH OIDC auth

[Strum355]

Close https://issues.redhat.com/browse/TC-3361.

This is the implementation only, until we have things to gate behind this, it remains "disabled" with the command hidden and no prompt on startup.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 15.81921% with 149 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.60%. Comparing base (ce96d7b) to head (1a6460d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/oidcAuthentication.ts	8.91%	92 Missing ⚠️
src/extension.ts	13.51%	32 Missing ⚠️
src/caStatusBarProvider.ts	0.00%	13 Missing ⚠️
src/fileHandler.ts	0.00%	7 Missing ⚠️
src/tokenProvider.ts	62.50%	3 Missing ⚠️
src/dependencyAnalysis/diagnostics.ts	0.00%	1 Missing ⚠️
src/imageAnalysis/diagnostics.ts	0.00%	1 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #844      +/-   ##
==========================================
- Coverage   61.13%   56.60%   -4.53%     
==========================================
  Files          31       33       +2     
  Lines        1446     1597     +151     
  Branches      268      287      +19     
==========================================
+ Hits          884      904      +20     
- Misses        547      678     +131     
  Partials       15       15              

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[ruromero]

nice feature, thank you