✨(project) first proof of concept based of Joanie

Used https://github.com/openfun/joanie as boilerplate, ran a few
transformations with ChapGPT  and adapted models and endpoints to
fit to my current vision of the project.

src/backend/core/tests/utils.py

@@ -0,0 +1,21 @@
+"""Utils for tests in the People core application"""
+from rest_framework_simplejwt.tokens import AccessToken
+
+
+class OIDCToken(AccessToken):
+    """Set payload on token from user/contact/email"""
+
+    @classmethod
+    def for_user(cls, user):
+        token = super().for_user(user)
+        identity = user.identities.filter(is_main=True).first()
+        token["first_name"] = (
+            user.profile_contact.short_name if user.profile_contact else "David"
+        )
+        token["last_name"] = (
+            " ".join(user.profile_contact.full_name.split()[1:])
+            if user.profile_contact
+            else "Bowman"
+        )
+        token["email"] = identity.email
+        return token