Refactor paging #67
Description
Refactor how paging works.
- PageStatus component contains expected LOD instead, based on distance to camera.
- Add a TileInfo component to take care of stuff like DDGI atlas
- Add a PagingOverride component that can specify overriding capabilities. Used for terrain for instance.
- Remove scene::Tile
This should greatly reduce the complexity of the ScenePager aswell as prepare for proper LODing.