Google Tiles Example: Improvements

- Lighting
- Automatically position ortho camera correctly based on hash
- Add sky / star box
- Cloud layer from Image
- Cloud layer from raymarching?
  - https://blog.maximeheckel.com/posts/real-time-cloudscapes-with-volumetric-raymarching/
  - https://x.com/CantBeFaraz/status/1820546109007106217