Load Lights

[Robert42]

• [x] load lights from scene
  • [x] support loading different light types (they don't have to to work yet, just load them and reder the debug view)
• [x] allow choosing which are movable
  • [x] sort movable and not movable lights in an array, no you can upload one block for each frame
  • [x] and take a note for potential optimization by storing not movable lights in a seperate buffer. But only try it, if the profiler says that there might be something optimized