feat: add ReferenceItem model and update QuickEvaluation FKs

- Create ReferenceitemModel with type, name, parent (self FK), order, is_active fields
- Add ReferenceType choices: brand, marka, color, fuel_type, body_type, car_position, state_car
- Implement ReferenceItem API (list, retrieve) with filter by type/parent/is_active, search, ordering
- Add ReferenceItem admin with list_filter, search, inline editing
- Change QuickEvaluation FK fields from shared.OptionsModel to evaluation.ReferenceitemModel
- Update serializers and views to use .name instead of .key
- Add ReferenceItem to unfold admin navigation

config/conf/navigation.py

@@ -107,4 +107,15 @@ PAGES = [
             },
         ],
     },
+    {
+        "title": _("Ma'lumotnomalari"),
+        "separator": True,
+        "items": [
+            {
+                "title": _("Ma'lumotnomalar"),
+                "icon": "category",
+                "link": reverse_lazy("admin:evaluation_referenceitemmodel_changelist"),
+            },
+        ],
+    },
 ]