Add Script.get_base_script/instance_base_type API

core/script_language.cpp

@@ -54,6 +54,8 @@ void Script::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_source_code"), &Script::get_source_code);
 	ClassDB::bind_method(D_METHOD("set_source_code", "source"), &Script::set_source_code);
 	ClassDB::bind_method(D_METHOD("reload", "keep_state"), &Script::reload, DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("get_base_script"), &Script::get_base_script);
+	ClassDB::bind_method(D_METHOD("get_instance_base_type"), &Script::get_instance_base_type);
 
 	ClassDB::bind_method(D_METHOD("has_script_signal", "signal_name"), &Script::has_script_signal);