* Add support for GHES joining
* Add tests for GHES ID Token validation
* Add test covering Auth server github join with GHES override
* Use correct ctx
* Name interface method parameters for clarity
* Use "scheme" instead of "proto"
* Improve docs, validation and add tests
* Introduce Github Actions join support
* Go mod tidy
* run goimports on source files
* Address PR comments
* More PR review comments
* Changes to tests based on PR feedback
* Improve error message in github rule validation
* Add support for SHA
* Add short message describing which fields shouldb be included