Added some content

- A fine-ass light cycle
- A basic texture atlas
- A TexturePacker file (unless you wanna spend $40, only I can edit this right now)
Loading assets at the beginning
Removed wallCamera from CameraManager
Created a CollisionSystem and CollisionComponent

- They don't do anything yet
Set the FPS of the game
Adjusted the camera sizes properly

- Before, one pixel in world space was as big as the screen
Added systems and managers