feat: add ClassifiedAdId value object and use it in ClassifiedAd

domain/marketplace/__init__.py

@@ -1,2 +1,3 @@
 from .classified_ad import ClassifiedAd as ClassifiedAd
-from .user_id import UserId as UserId
+from .classified_ad_id import ClassifiedAdId as ClassifiedAdId
+from .user_id import UserId as UserId

domain/marketplace/classified_ad.py

@@ -1,13 +1,13 @@
 from dataclasses import dataclass
 from decimal import Decimal
-from uuid import UUID
 
+from domain.marketplace.classified_ad_id import ClassifiedAdId
 from domain.marketplace.user_id import UserId
 
 
 @dataclass(frozen=True)
 class ClassifiedAd:
-    id: UUID
+    id: ClassifiedAdId
     _ownerId: UserId
     title: str
     text: str

domain/marketplace/classified_ad_id.py

@@ -0,0 +1,7 @@
+from dataclasses import dataclass
+from uuid import UUID
+
+
+@dataclass(frozen=True)
+class ClassifiedAdId:
+    value: UUID