BUG: Add BBox check logic for zooming to auxiliary geometry/image
vtkAuxiliaryGeometryExtension would set a bounding box for auxiliary geometry when it's loaded in, however entitiyRef has no logic to handle it.
Partially address CMB issue #162
vtkAuxiliaryGeometryExtension would set a bounding box for auxiliary geometry when it's loaded in, however entitiyRef has no logic to handle it.
Partially address CMB issue #162