move generated stubs to separate directory, too messty

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

@@ -1,12 +0,0 @@
-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: ...