Clarify how scale is applied on RigidBody's geometry and collision shape.

StaticRigidBody {// could also be a dynamic one
      id: aestWall                    
      position: ...
      scale: scaleA
      Model {
          id: model
          source: "qrc:/my/mesh.mesh"
          scale: scaleB
           materials: DefaultMaterial {
                  diffuseColor: "#888800"
          }
      }
      collisionShapes: ConvexMeshShape {
          source: model.source
      }
        
}