Gamepad support

[bollwyvl]

Elevator Pitch

Offer deck navigation with gamepads.

Motivation

Using a gamepad offers a host of buttons which would be sufficient for many of the tasks of #3. These can likely work with mobile devices as well.

Design Ideas

• offer a plugin exposing an IController
  • wraps a CommandRegistry
  • similar to keyboard bindings, scope buttons to
  • offer different pre-saved layouts
  • save in settings
  • detect controllers
• add controller mode to remote Add off-screen speaker notes #9
  • make easy to turn off if e.g using ipywidgets.Controller
    • though maybe demo with this first