[Enhancement Request] support gamepad/controller input to navigate in FeedBack

[Juppstein]

For those of us that play in front of a TV and/or who've played that other game on a console it would be pretty cool to have controller support in FeedBack. On a personal note from us wheelchair players: having a controller in your lap that can be easily grabbed and used is much more convenient than a bulky keboard and a mouse.

[mhglover]

I've been working on Steam Deck stuff, so this feels like an easy one. I'll take a crack at this.

[KwasimodoZA]

Keyboard navigation would be nice too

[mhglover]

My first attempt at it: #1001

[Juppstein]

Can confirm this is working out of the garage on a Ubuntu 24.04 LTS with a Sony Duasense Edge. FeedBack is missing any indication on how and where the gamepad is active but that is probably only due to the very early implementation of the whole thing. Looks like a lovely progress so far. Thanks for tackling this!