Create scalability settings

[terrehbyte]

PC players do not have a standard hardware specification that we can rely on. To allow more players with lower-end hardware to play the game while maintaining frame rate, we need to support quality settings to reduce the resource load on the machine.

Players should be able to hit ESC while in-game (or select the settings menu if we implement one) and find it in the pause menu. Just hit the drop-down and select the new profile they want to use.

• Expose quality settings #4