Fix missing VR_Rig Prefab

[Joey-Haney]

Description

Rebuild of the lost VR_rig which contains the gesture tracking stuff and camera setup for VR

Related Issue

14

Motivation and Context

The VR rig was lost during merging with the unstable branch called remove legacy. This reintroduces it.

How Has This Been Tested?

Used to test gestures and related functionality through use of gestures.

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.