🎨 format code using black and isort

packages/nonebot-adapter-mirai/nonebot/adapters/mirai/event/meta.py

@@ -3,29 +3,35 @@ from .base import Event
 
 class MetaEvent(Event):
     """元事件基类"""
+
     qq: int
 
 
 class BotOnlineEvent(MetaEvent):
     """Bot登录成功"""
+
     pass
 
 
 class BotOfflineEventActive(MetaEvent):
     """Bot主动离线"""
+
     pass
 
 
 class BotOfflineEventForce(MetaEvent):
     """Bot被挤下线"""
+
     pass
 
 
 class BotOfflineEventDropped(MetaEvent):
     """Bot被服务器断开或因网络问题而掉线"""
+
     pass
 
 
 class BotReloginEvent(MetaEvent):
     """Bot主动重新登录"""
-    pass
+
+    pass