Add command to create a To Do for a merge request
Is your feature request related to a problem? Please describe. User should be able to create a ToDo for a merge request
Describe the solution you'd like
glab mr <merge-id> new-todo
Describe alternatives you've considered
glab mr <merge-id> create-todo
glab mr <merge-id> todo create
glab mr <merge-id> todo new
Additional context https://docs.gitlab.com/ee/api/merge_requests.html#create-a-todo