[Feature Request] Allow us to store scopes for each type and display them in dropdown

[tad3j]

I would be really awesome if scope input on commit screen would be a mix of input and dropdown, so we can easily select scope from a dropdown or enter custom one if it happens it wasn't added yet.

To achieve that I would propose that additional field scopes is added to settings page (types table) where plugin would hold a comma delimited list of scopes (which are used for populating dropdown on commit screen mentioned above).

[心累]

同求， scope也加上可下拉可手写可配置