Added Collideable interface and completed more of the Hitbox and Hurtbox classes

Added:
  -Debug.cs for debugging
  -Collideable.cs as an interface for objects that block others via movement
  -ScalableBox.png for allowing for easy showing of boxes such as Hitbox and Hurtboxes for debugging purposes
Merge branch 'MovementCollisions' into GunSystem

Conflicts:
	Top Down Shooter/Top Down Shooter/Top Down Shooter.csproj