[RQ] Controller support: enable ctrl axes to act as buttons

[wildweasel486]

Hello, just tried out this engine for the first time today. Was attempting to set up my XBox Series X gamepad with a layout similar to Overload, but found that I can't bind the analog triggers to fire functions (or slide-up by itself).

I am unsure if Xinput support is within scope, though, and I suspect it might be needed for this, as dinput treats the triggers as one axis.

[TheNametag]

I would also like to assign more axis from my Xbox controller to other buttons. Not just the triggers, but the second analog stick to slide while the left stick tilts/rotates (and the triggers then for speed). Right now, I am unable to have the controller laid out the way I'd like.