Update 1.2.2: in-game reset

Added a way to reset the game without having to go through a menu.
You can now reset the game in the game over screen and in the ending screen.
Additionally, the music will now also fade out when reaching a Game-Over.

This was mainly done because there can be situations where the default menu screen isn't available, forcing you to hard-reset the game.
This is done to prevent that.