Added a shadow to to the player and adjusted the occlusion material

[GageM]

What

• Adds a circular shadow to the player
• Adds a transparency mask to the occlusion material

How

• Adds a radial mask to the occlusion material
• Uses decals to create the player shadow effect

Why

• To make platforming easier by telegraphing where the player will land
• To make the occlusion material look better and fit with the rest of the game

[antoniukoff]

@GageM Beautiful work