Easy couch co-op

This is a template to make your own couch co-op or local multiplayer game with the new input system

For now it contains 2 examples:

- example 1 is a classic menu of games like moving out, overcooked...

here the player panel appears when any button in pressed and the player can change skin

and hol the confirm button when it's ready to play

- example 2 is a menu in the style of Smash Bros

here when a player press a button a hand appears, players can use the hand to select

the skin in the grid, only one skin can be used by one player

Please remember that this is a work in progress package, new features will be added over time and price might change.