Refactor bot and integrate services

auth.py

@@ -0,0 +1,10 @@
+from aiogram.types import Message, CallbackQuery
+from app import ADMIN_ID
+
+
+def is_admin_msg(msg: Message) -> bool:
+    return msg.from_user and msg.from_user.id == ADMIN_ID
+
+
+def is_admin_cb(cb: CallbackQuery) -> bool:
+    return cb.from_user and cb.from_user.id == ADMIN_ID