Control mapper - unlatch exist FN-latch

Looking got an option to unlatch a existing latch when pressing another button.

Usecase:

I have a FN set by `Momentary to Latching`, this allow the buttons on my wheel to become Replay controls (FF, RR, next car, incident etc)

Been able to assign an unlatch to my `drive/enter car` button means that none of the camera controls would then function while driving (good thing).

This out-of-car control via FN-latch can also be used to navigate UI (via keyboard mapping etc) and auto disable in car.

Similarly, a FN-latch could be used allow wheel buttons to control pit option, while pit-limiter press would switch off the latch (assuming you tweak options before hitting pit lane!)