Feature request: gamepad input

Is your feature request related to a problem? Please describe.

I'm trying to prototype a new kind of keyboard using a PlayStation controller rather than custom hardware. I thought i could use Kanata for this, but it won't accept inputs from my controller.

Describe the solution you'd like.

Keycodes for controller buttons and joystick input and output. Maybe also for accelerometers and gyroscopes but i think those sound less useful for a keyboard. These could look like QMK's JS_0, JS_1, etc.

Describe alternatives you've considered.

For my particular use case, i could also make a piece of custom hardware that sends keyboard inputs. This would be a lot of work since i don't yet know how to use CAD programs.

I could also use a program to translate gamepad inputs to keyboard input, like AntiMicroX. This is what i tried first and it doesn't work because that program's intended function would be harder to use if it didn't totally ignore Kanata. As far as i know, similar programs for Linux (my OS) don't exist.

Additional context

No response