Add initial implementations for forms and organization apps with serializers, factories, and admin configurations

tests/utils/http_server.py

@@ -3,12 +3,11 @@
 from __future__ import annotations
 
 import json
+from collections.abc import Callable
 from dataclasses import dataclass, field
 from types import SimpleNamespace
-from typing import Callable
 from urllib.parse import urlparse
 
-import requests
 from requests.adapters import BaseAdapter
 from requests.models import Response as RequestsResponse
 
@@ -123,7 +122,7 @@ class TestHTTPServer:
     def stop(self) -> None:
         self._started = False
 
-    def __enter__(self) -> "TestHTTPServer":
+    def __enter__(self) -> TestHTTPServer:
         self.start()
         return self