Reuse existing projects & groups resolvers for Organization

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144716



Merged-by: Peter Hegman <phegman@gitlab.com>
Approved-by: Alex Pooley <apooley@gitlab.com>
Approved-by: Sincheol (David) Kim <dkim@gitlab.com>
Approved-by: Nataliia Radina <nradina@gitlab.com>
Approved-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Approved-by: Alper Akgun <aakgun@gitlab.com>
Approved-by: Peter Hegman <phegman@gitlab.com>
Reviewed-by: Alex Pooley <apooley@gitlab.com>
Co-authored-by: Abdul Wadood <awadood@gitlab.com>