dev@locazia: add User.front_format

app/core/models/user/display_mixin.py

@@ -9,3 +9,9 @@ class DisplayMixin:
             "last_use": self.last_use.isoformat(),
             "created": self.created.isoformat()
         }
+
+    def front_format(self, plaint_text=True):
+        if not plaint_text:
+            raise NotImplementedError
+
+        return f"{self.first_name} {self.last_name}".strip()