Manage GitLab merge requests. Some subcommands such as
createhave their own usage documentation. More information: https://gitlab.com/gitlab-org/cli/-/blob/main/docs/source/mr/index.md.
glab mr create
glab mr checkout {{mr_number}}
glab mr diff
glab mr approve
glab mr merge
glab mr update
glab mr update --target-branch {{branch_name}}