Complete Attract Two Pickup

[KarylReyne]

• [x] implement HUD switch
• [x] implement Inventory unlock: save unlockedUltimates dict persistently
• [x] implement Inventory unlock: reset unlockedUltimates dict at newGame
• [x] implement Inventory unlock: update ultimate sprites once the new sprites are finished
• [x] implement Inventory unlock: reset ulti sprite at HUD.Start() only at newGame