This change adds the initial stepping stones for harness integration:
- Authentication: JWT/PAT/SAT support
- Authorization: ACL integration (acl currently denies requests as gitness hasn't been integrated yet)
- Remote Clients for Token, User, ServiceAccount, ACL
- User Integration: Syncs harness users during authentication if unknown
- SA integration: syncs harness service accounts during authentication if unknown
- Initial harness API: THIS WILL BE CHANGED IN THE FUTURE!
- single harness subpackage (all marked with harness build flag)
- harness & standalone wire + make build commands
This change introduces the concept of a principal (abstraction of call identity), and adds a new service account type principal. Also adds support for different tokens (session, PAT, SAT, OAuth2) and adds auth.Session which is being used to capture information about the caller and call method.
