CAS117 Project 2, 2D-Shooter

Changes made:

1. Changed UI text to text mesh pro and accompanying scripts
2. Changed UI layout 
3. Added Tutorial stage
4. Reconfigured game to one main level
   1. Large level featuring many secrets
   2. secret paths obscured via new tilemap
5. Added dive Mechanic
6. Added camera shake
7. Added parallax 
8. Added loading transitions
   1. Added loading screen
9. Changed Main menu layout

Particle system and loading transition shader by David Sohn