Some new (late) sounds!

Added some sounds to the game! I recorded the doors and keys myself with (you guessed it) doors and keys. I used a plain sound recorder and used my very own door and set of keys! I didn't want to keys to sound too long so it didn't seem like you were grabbing a ton, so I think the short burst of keys is a solid sound. The locked door needed to feel like you really wanted through, but you weren't in a huge rush. And the opening door also needed to reflect that. Altogether, I think it came out nicely! I also added some music I pulled from incompetech, Goblin Tinker Soldier Spy.