Add get_scene_node_path and has_additional_data to GLTFNode, remove center of mass ignore warning in physics (it's supported now), rename `d` to `mesh_dict` in mesh import code.
Add get_scene_node_path and has_additional_data to GLTFNode, remove center of mass ignore warning in physics (it's supported now), rename `d` to `mesh_dict` in mesh import code.