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

core/apps/evaluation/validators/reference.py

@@ -0,0 +1,8 @@
+# from django.core.exceptions import ValidationError
+
+
+class ReferenceitemValidator:
+    def __init__(self): ...
+
+    def __call__(self):
+        return True