Add allauth_oauth app to sync user fields on OAuth login

allauth_oauth/apps.py

@@ -0,0 +1,12 @@
+# This file is part of photo21
+# Copyright (C) 2022  Amicale des élèves de l'ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.apps import AppConfig
+
+
+class AllauthOAuthConfig(AppConfig):
+    name = "allauth_oauth"
+
+    def ready(self):
+        import allauth_oauth.signals  # noqa: F401