feat: support github enterprise api

[ricardojdsilva87]

Pull Request

Proposed Changes

This Pull request is based on the already merged github/evergreen#256 to give support to GitHub Enterprise login using a GitHub App also created on GitHub Enterprise

• Split the authentication to a separate file
• Added needed tests

Code coverage

---------- coverage: platform darwin, python 3.13.0-final-0 ----------
Name             Stmts   Miss  Cover   Missing
----------------------------------------------
auth.py             16      1    94%   47
stale_repos.py     151     16    89%   142-143, 184-185, 200-201, 224, 326, 328, 335-336, 394-395, 402-403, 413
----------------------------------------------
TOTAL              167     17    90%

Required test coverage of 80% reached. Total coverage: 89.82%

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request
• run make lint and fix any issues that you have introduced
• run make test and ensure you have test coverage for the lines you are introducing
• If publishing new data to the public (scorecards, security scan results, code quality results, live dashboards, etc.), please request review from @jeffrey-luszcz

Reviewer

• Label as either fix, documentation, enhancement, infrastructure, maintenance or breaking

[jmeridth]

One import question. Nice break out of the auth content.

[jmeridth]

new linting errors to handle

[ricardojdsilva87]

new linting errors to handle

Hello @jmeridth regarding these lint errors the only way I found was to update the isort.cfg file to have:

[settings]
profile = black
known_third_party = github3,dateutil,dotenv
known_first_party = auth

Otherwise running locally make lint is always organizing the imports in the wrong way that triggers the error. Should I add this or should this be done in a different way?
Thanks

[jmeridth]

new linting errors to handle

Hello @jmeridth regarding these lint errors the only way I found was to update the isort.cfg file to have:

[settings]
profile = black
known_third_party = github3,dateutil,dotenv
known_first_party = auth

Otherwise running locally make lint is always organizing the imports in the wrong way that triggers the error. Should I add this or should this be done in a different way? Thanks

I'm good with this change. Thank you for fixing.

[jmeridth]

To fix those linting errors you can add them to the configuration.

disable=raw-checker-failed,
        bad-inline-option,
        locally-disabled,
        file-ignored,
        suppressed-message,
        useless-suppression,
        deprecated-pragma,
        use-symbolic-message-instead,
        use-implicit-booleaness-not-comparison-to-string,
        use-implicit-booleaness-not-comparison-to-zero,
        import-error
        line-too-long
        too-many-arguments