StagedResourceEntity now supports RendererLOD components as well as MeshLOD
Update StagedDestructionEntityInfo to use a GameObjectRef to the source mesh asset rather having to serialize a mesh for each LOD
Use the source mesh asset to ascertain which mesh and materials we should apply for each LOD stage
Fixes new trolley blocker using the wrong materials when switching destruction stages. Also less faffing around with meshes in the editor than before
Update all StagedResourceEntity prefabs so they work as before