Represent switch to workspace intelligently

Right now all of the keys for the Super 1-9 shortcuts are separate keys. After some discussion with @cassidyjames it sounds like we think we can assume that these keys will be consistent and we should represent it as: `[ ⌘ ] [ 1 ] - [ 9 ]`.

To do this technically, probably the best way to go is to grab and display the key at `SCHEMA_WM`, `switch-to-workspace-1` and then check and see what's the last non-null `switch-to-workspace-n` key (it goes up to 12) and then display that number