Cape randomizer

## A mod for people who want to show off their capes  This mod equips a randomly chosen cape on your minecraft profile everytime you disconnect from a server. You can choose which capes will be included in randomizer pool by opening the "Select favorite capes" screen via mod menu or by using `/caperandomizer set_favorites` command. In this screen you can also select the default cape, which will automatically equip when you close the game.