Implement Color Block Object Pooling

[E-A-N]

• Sync Color Block Positions to background tiles
• Enable Collision with player
• Make sure Color Blocks are recyled when exiting the screen

Continuation from: #87

[hal255]

@E-A-N @Ricimon
Not sure if you're still taking ideas.
Proposed idea:
https://docs.google.com/presentation/d/1GTmDmKDqJa17qPt2BueNontnfW-c2i3x_lBc67FD5gQ/edit?usp=sharing