Boss Beta V0.0.3

Added a new boss, likely the first encountered boss in the final playable game.

First phase: (above 50% heath)

Shoots rocks, a shock wave, and occasionally does a ground pound

Second phase: (below 50% heath) 

Attacks 2x faster for previous phase attacks, as well as gaining an ability to shoot homing rocks and a giant rock pillar swing.

(No modeling, sound design, or other work has been done to ensure this project is only testing concepts)