feat(oauth_validators.py): add CustomOAuth2Validator to supply OIDC scopes

kursy/oauth_validators.py

@@ -0,0 +1,11 @@
+from oauth2_provider.oauth2_validators import OAuth2Validator
+
+
+class CustomOAuth2Validator(OAuth2Validator):
+    def get_additional_claims(self, request):
+        print("get_additional_claims", request.user)
+        return {
+            "name": " ".join([request.user.first_name, request.user.last_name]),
+            "preferred_username": f"studio77-{request.user.username}",
+            "email": request.user.email,
+        }