`lucy add github.com/user/repo:package-name@version` or `lucy add github.com/user/repo` if the repo only has 1 package. Support GitHub only at this stage. Allow `github/user/repo` and `gh/user/repo`.
lucy add github.com/user/repo:package-name@versionorlucy add github.com/user/repoif the repo only has 1 package.Support GitHub only at this stage.
Allow
github/user/repoandgh/user/repo.