Control the UI with a gamepad
Migrated from https://bugzilla.gnome.org/show_bug.cgi?id=779096
We should allow to control the application with the same input used to control the game, which is often a gamepad.
This would require:
- designing the interaction (which button triggers which action…)
- introducing a ShortcutsWindow
- making the ShortcutsWindow support standard gamepad inputs