Create initial spritesheet

[nelsonxb]

Just enough stuff to get us started. We can always add to it if need be.

• Player animations
  • Idling
  • Running (this and previous one have poor animations. Will fix after initial sprites done)
  • Jumping
  • Attack animations
    • Melee
    • Ranged

[nelsonxb]

I'm removing the tiles item from this list, and saying that's going to be a separate issue (specifically, #13).