feat(mai2): Add API request function to handle game NG word list

- Add handle_get_game_ng_word_list_api_request function
- Return an empty sensitive word list, including exact match and partial match lists - for maimai DX China version

titles/mai2/buddies.py

@@ -17,3 +17,12 @@ class Mai2Buddies(Mai2FestivalPlus):
         # hardcode lastDataVersion for CardMaker
         user_data["lastDataVersion"] = "1.40.00"
         return user_data
+
+    async def handle_get_game_ng_word_list_api_request(self, data: Dict) -> Dict:
+        # for maimai DX China version
+        return {
+            "ngWordExactMatchLength":0,
+            "ngWordExactMatchList":[],
+            "ngWordPartialMatchLength":0,
+            "ngWordPartialMatchList":[]
+        }