refactor: 数据存储重构，分离不同类型的存储实现

db.py

@@ -1,14 +1,20 @@
+from typing import List
+
 from tortoise import Tortoise, run_async
 
 from config.db_config import *
 from tools import utils
 
 
+def get_platform_models() -> List[str]:
+    models = ["store.xhs", "store.douyin", "store.bilibili", "store.kuaishou", "store.weibo"]
+    return models
+
+
 async def init_db(create_db: bool = False) -> None:
     await Tortoise.init(
         db_url=RELATION_DB_URL,
-        modules={'models': ['models']},
-        # modules={'models': ['models.kuaishou']}, # generate special table
+        modules={'models': get_platform_models()},
         _create_db=create_db
     )