Modularization + HVR introduction

[JaXt0r]

To test:

1. Checkout branch: feature/modularization
2. See image 1: Install HVR (Assets/HurricaneVR/*) and Activate it via Menu in Unity
3. See image 2: Skip main menu in feature flags (not working as of now).
4. What should work with HVR:
   1. Climbing
   2. Chest opening
   3. Door opening

Then the game should load and place you. You can now start testing.

Known issues:

• The main menu isn't working with HVR so far. I think it's related to the fact, that the HVRPlayer has no menu set up so far
• When you enter the game, it always spawns you at 0,0,0 (So lean a little forward when hitting "play". Otherwise the character will fall through the ground

Helpful hints:

• See image 3: You can always check if you're currently using HVR or OXR.
• When you want to implement main menu etc. Just hit "Deactivate HVR" in the same menu. Then the game boots with OXR logic and you can compare
• Image 4: The custom HVR adapter logic and OXR adapter logic is now in a separate module