move generated stubs to separate directory, too messty

django-stubs-generated/contrib/messages/storage/fallback.pyi

@@ -0,0 +1,12 @@
+from typing import Any, Optional
+
+from django.contrib.messages.storage.base import BaseStorage
+
+
+class FallbackStorage(BaseStorage):
+    added_new: bool
+    request: django.core.handlers.wsgi.WSGIRequest
+    used: bool
+    storage_classes: Any = ...
+    storages: Any = ...
+    def __init__(self, *args: Any, **kwargs: Any) -> None: ...