loadGltf method
Load the .gltf asset at the given path and insert into the scene.
relativeResourcePath
is the folder path where the glTF resources are stored;
this is usually the parent directory of the .gltf file itself.
Implementation
@override
Future<ThermionEntity> loadGltf(String path, String relativeResourcePath,
{bool force = false}) {
// TODO: implement loadGltf
throw UnimplementedError();
}