Add `is_empty_tree()` and `is_empty_blob()` methods to `gix_hash::Oid`#2166

Byron merged 2 commits intomainGitoxideLabs/gitoxide:mainfrom

copilot/fix-ffb06a30-3f53-4f82-94ed-51935d63da63GitoxideLabs/gitoxide:copilot/fix-ffb06a30-3f53-4f82-94ed-51935d63da63Copy head branch name to clipboard