Highlight objects pointed at + show its name

[JaXt0r]

Like G1, marked objects are now brightened up and their name is shown.

To test:

• General expected behaviour: Objects should be highlighted most of the time when pointed towards.
• Spawn Lab with HVR (+/- Simulator) and test the oCMob* elements left of ladder demo.
• Spawn world and try if names and highlights are shown on objects as well
  • Object names should rotate along your camera movement
• GameConfiguration has two new fields: BrightenUpHoveredVOBs + ShowNamesOnHoveredVOBs -> Please disable them and see if it works as you expect it.

Boundary:

• Inside lab, VOBs have no name
• Some objects also have no name inside G1 (e.g. lights on the street). It's intended behavior by G1.
• HVR "Hover" feature sometimes doesn't recognize, that we point to an object. We need to investigate it later if it disturbs.
• It might be, that not all VOB names are perfectly visible from all angles. Please judge for yourself if it's a blocker or ok for now.
• Separate tickets:
  • Doors and Chests have the HVRPhysicalDoor component and rotate already. But it's still physics based and will stop when a world collision (e.g. a wall) is detected. I will mention this in the Door/Chest tickets to solve there. (#19 + #23)
  • Every object has HVRGrabbable as component to use its Hover events. Even if we won't "grab" an object (e.g. a lever). I will create a separate ticket to think about a better logic. (#67)
  • Some objects (e.g. water pipe) have incorrect Grabbable logic (prefab-ed on wrong spot). We will create a new ticket for better lookup during mesh creation in a separate ticket. (#68)

[JaXt0r]

Thanks for testing. I created a follow up issue for the textures: https://github.com/Gothic-UnZENity-Project/Gothic-UnZENity/issues/72