Update & Polishes

This is probably gonna be the only update to the game, since it is hard to maintain and improve without a lot of rework (standard aftermath of a 48h Jam - ugly code everywhere)

• The tutorial is a lot more polish
• It use the new input system, that allows dynamic player detection and I made a special screen for players to join
• The menu fully works with controller or keyboard (for some reason the joystick axis is inverted after build export, not in editor...)
• The menu elements are more polished with soundFX, animations and so.
• There is now a big button into the level to early validate a level without having to wait for the timer
• Several bug fixes