Chests!

• Added chest component
• Chest component is extensible to make chests facing in 4 directions;
currently only 1 facing is available however.
• Chests can give a # of rupees
• Chests can add an item to inventory
• Chests have a noise they make and a notification they display
• The item in the chest is held aloft
• New sprite frame for getting a new item
• Added a couple test chests to the world

(Note: chests reset per screen, just as bushes and monsters. This will
NOT be final functionality.)