Steam Deck minor fixes

Running in the Y2K

Run, Jump and Hunt through procedurally generated levels to feed your family in the post-apocalyptic world of the year 2000 after the Y2K bug occurred. Compete against everyone in the leaderboards to show who is the best hunter in the new world.

This update focuses on improving the experience when playing on a Steam Deck. Fixes: [list] [*]Fixed Cave screen resolution [*]Fixed mouse behaviour on the Cave [*]Improved mouse behaviour in the menu [*]Added joystick support for all menu interactions [/list] That's all for now, thank you for everything!