[TODO] more usdLux support

[syoyo]

• Support more usdLux Prims
• Convert light infos in tydra
• Support usdLux in example viewer
  • We are better only focusing on it in raytraced renderer, since it is diffucult to implement various lights(e.g. Mesh light) in OpenGL/Vulkan renderer.
• Collection API in lights(light sets, shadow controls, etc) [TODO] Collection API support #108

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.