move generated stubs to separate directory, too messty

django-stubs-generated/contrib/messages/middleware.pyi

@@ -0,0 +1,14 @@
+from typing import Any, Optional
+
+from django.core.handlers.wsgi import WSGIRequest
+from django.http.request import HttpRequest
+from django.http.response import HttpResponseBase
+from django.utils.deprecation import MiddlewareMixin
+
+
+class MessageMiddleware(MiddlewareMixin):
+    get_response: Callable
+    def process_request(self, request: WSGIRequest) -> None: ...
+    def process_response(
+        self, request: HttpRequest, response: HttpResponseBase
+    ) -> HttpResponseBase: ...