[Unity] UI Canvas for VR

1. Create a camera under [Main Camera] and delete [Audio Listner]

2. Rename this camera to [UI Camera]

3. [UI Camera] - Change [Clear Flags] to [Depth Only]

4. [UI Camera] - Change [Culling Mask] to [UI] only

5. [Main Camera] - Check off [UI] from [Culling Mask]

6. [UI Cmaera] - Change [Depth] to 1 (Higher than [Main Camera])

7. [Canvas] (w/ Screen Space - Camera) - Change [Render Camera] to [UI Camera]