Used gdformat from godot-gdscript-toolkit to automatically clean up
formatting to be consistent across the project.
One exception: there's a long line in player.gd that it split across
multiple lines that seemed worse than before.
Fix camera moves 180 degrees every frame when using gamepad.
Store a rotation delta and use rotate_toward to move with a max speed
instead of a lerp. Has the same general feel with mouse, but now gamepad
feels reasonable.