Fix Controller Input when a Game Doesn't Use Steam Input
Background Knowledge Steam Input is an interface for developers to use the controller configuration built into Steam for their games. It is entirely optional and not all games use it. Steam gives you the option to enable and disable Steam Input on a per game basis. Steam has controller button mapping for in-game, Big Picture Mode, and on desktop (outside of games), and mappings for individual games. By default Steam will give certain controllers a desktop mapping that lets you move the mouse and bring up an on-screen keyboard, which is not what you want in a game. If you press F11 in a game and Steam Overlay doesn't appear and you have it configured to appear, Steam thinks that you are not in a game, and therefore it will use the desktop mapping instead of the in-game mapping. Steam Input works by capturing inputs from your controller, suppressing them from the rest of your system and emitting the inputs that you desire instead to the rest of your system. Problem If you are playin