add manage.py and update settings for django3.2

manage.py

+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
+
+    from django.core.management import execute_from_command_line
+    args = sys.argv[:]
+    if len(args) == 2 and sys.argv[1] == 'runserver':
+        # Default to serving externally if not told otherwise
+        args = sys.argv + ['0.0.0.0:8080']
+    execute_from_command_line(args)

settings.py

 from tests.app.settings import *  # noqa: F401,F403
 
+
+ALLOWED_HOSTS = ['*']
+
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.sqlite3',
@@ -13,3 +16,5 @@ INSTALLED_APPS += [
 
 WAGTAILVIDEOS_VIDEO_MODEL = 'app.CustomVideoModel'
 WAGTAIL_USAGE_COUNT_ENABLED = True
+
+DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'