[Operator] Bind setHook and getHook function.

python_binding/operator/pybind_Operator.cpp

@@ -29,6 +29,8 @@ void init_Operator(py::module& m){
     .def("forward", &Operator::forward)
     // py::keep_alive forbide Python to garbage collect implementation will the Operator is not garbade collected !
     .def("set_impl", &Operator::setImpl, py::arg("implementation"), py::keep_alive<1, 2>())
+    .def("get_hook", &Operator::getHook)
+    .def("add_hook", &Operator::addHook)
     ;
 }
 }