UNIT TEST: Collision & Masking Layers For All Levels

[emanisgrand]

1. Get GUT from the Asset Library
2. Activate GUT
3. Add a Test Runner Gut Node. Run it with CTRL + R
4. Create the Test -> Unit directory
5. Follow the Gut tut

Proceed to write a test case that ensures every level follows the convention that is explained in this issue:

Layer	Name
1	player skeleton
2	walls
3	player collider

Walls & Obstacles:

• Colliders: 1, 2, 3
• Mask: 1, 3

Player

• Colliders: 3
• Mask: 2

Originally posted by @emanisgrand in https://github.com/emanisgrand/boost/issues/17#issuecomment-1885580710