add consumable chip

like the "add currency" chip which lets the player earn a currency instead of buying it with tokens, we should have an "add consumable" chip which adds a consumable to the player's room inventory. also, we should have an option for keys and consumables to have an alternative currency that you can buy them with, and maybe also an option to make an item cost 2 currencies. for example: a "wood" currency that you can earn from wood, and a "rock" currency that you can earn from a rock. to buy a pickaxe, you need 3 rocks and 2 sticks. (might sound familiar ;))