Add support for new feature commands
We need to update (or potentially just remove) or input validations at https://gitlab.com/gitlab-com/chatops/-/blob/master/lib/chatops/gitlab/feature.rb#L19
These checks are duplicative of the ones in the endpoint themselves, and need to be updated every time something changes in the backend service (as it has in gitlab-org/gitlab!98575 (merged))
Ideally we would just send the data to the endpoint, and display the error message it returns to the user.