CommitService: implement FindCommits (partially for now)
For now, this doesn't support all lookups, but we plan to complete it by HGitaly1 milestone.
This instance will be upgraded to Heptapod 18.5.1 on 2025-11-13 between 17:00 and 18:00 UTC+2
For now, this doesn't support all lookups, but we plan to complete it by HGitaly1 milestone.