Is your feature request related to a problem? Please describe.
On all existing desktop environments (heck even macOS) you can just outright disable the caps lock key. This seems to be impossible in cosmic. I can set it to escape or control, but I just don't want the key mapped.

Describe the solution you'd like
I'd like to be able to disable caps lock in cosmic too.

Describe alternatives you've considered
I've set it to control for now as a workaround.