Fix CppCheck errors

Adress CppCheck errors that can be solved.

python_binding/pybind_core.cpp

@@ -156,5 +156,6 @@ void init_Aidge(py::module& m) {
     init_Filler(m);
 }
 
-PYBIND11_MODULE(aidge_core, m) { init_Aidge(m); }
 }  // namespace Aidge
+
+PYBIND11_MODULE(aidge_core, m) { Aidge::init_Aidge(m); }