Replaced Lava Chicken

Replaces Hyper Potion's Lava Chicken with C418's dog, as heard in Legacy Console Edition as part of cat. Includes Song, Disc texture, and translation strings (US English only, though). Does not change the method of obtaining the disc, so it is still obtained as a drop from Chicken Jockeys.

There is a confirmed issue where the song ends 10 seconds earlier than it's supposed to. This is because dog is 10 seconds longer than Lava Chicken. Unfortunately, I don't think I can fix this without modifying dog in some way.