feat: added ads endpoints

solution/services/backend/api/v1/ads/schemas.py

@@ -0,0 +1,23 @@
+from typing import ClassVar
+from uuid import UUID
+
+from ninja import ModelSchema, Schema
+
+from apps.campaign.models import Campaign
+
+
+class Advertisment(ModelSchema):
+    advertiser_id: UUID
+    ad_id: UUID
+
+    class Meta:
+        model = Campaign
+        fields: ClassVar[tuple[str]] = (
+            Campaign.ad_title.field.name,
+            Campaign.ad_text.field.name,
+            Campaign.ad_image.field.name,
+        )
+
+
+class ClickIn(Schema):
+    client_id: UUID