Generify OrgAppInstallationAuthorizationProvider to support any kind of app lookup.

[PierreBtz]

Description

The OrgAppInstallationAuthorizationProvider only works with organization level apps, leaving out user apps. The bulk of the class logic remains useful to perform application lookup other ways (eg using the installation id), or even to lookup for user application.

This PR provides a way for the API user to provide its own lookup logic.

This PR is submitted as a draft because:

• I would need access to the hub4j-test-org as well as the installation id of the test app to finish writing the tests.
• I'm not 100% convinced OrgAppInstallationAuthorizationProvider should be deprecated. The way I see it, it's not useless and just a maintenance burden that you might want to remove in the future after a deprecation phase :)

Before submitting a PR:

• Changes must not break binary backwards compatibility. If you are unclear on how to make the change you think is needed while maintaining backward compatibility, CONTRIBUTING.md for details.
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• Add tests that cover any added or changed code. This generally requires capturing snapshot test data. See CONTRIBUTING.md for details.
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When creating a PR:

• Fill in the "Description" above with clear summary of the changes. This includes:
• [ ] If this PR fixes one or more issues, include "Fixes #" lines for each issue.
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[bitwiseman]

@PierreBtz I've invited you to the hub4j-test-org.

[PierreBtz]

@bitwiseman thanks for the access. I finally had time to complete this work...

[codecov]

Codecov Report

Patch coverage: 93.33% and no project coverage change.

Comparison is base (5380f59) 79.89% compared to head (ba0f0a0) 79.89%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1624   +/-   ##
=========================================
  Coverage     79.89%   79.89%           
  Complexity     2197     2197           
=========================================
  Files           209      210    +1     
  Lines          6670     6671    +1     
  Branches        364      364           
=========================================
+ Hits           5329     5330    +1     
  Misses         1127     1127           
  Partials        214      214           

Impacted Files	Coverage Δ
...rization/AppInstallationAuthorizationProvider.java	92.85% <92.85%> (ø)
...ation/OrgAppInstallationAuthorizationProvider.java	100.00% <100.00%> (+6.66%)	⬆️

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[PierreBtz]

@bitwiseman gentle ping, is there anything blocking this PR from being merged? Thanks for your time.

[PierreBtz]

@bitwiseman thanks for taking care of the merge, would you mind cutting a release ?

[bitwiseman]

@PierreBtz
I'll get in the next day.

[bitwiseman]

https://github.com/hub4j/github-api/releases/tag/github-api-1.315

[PierreBtz]

Thanks!!