feat: added mlscore app

solution/services/backend/apps/mlscore/models.py

@@ -0,0 +1,28 @@
+from django.db import models
+
+from apps.advertiser.models import Advertiser
+from apps.client.models import Client
+from apps.core.models import BaseModel
+
+
+class Mlscore(BaseModel):
+    advertiser = models.ForeignKey(
+        Advertiser,
+        on_delete=models.CASCADE,
+        related_name="mlscores",
+    )
+    client = models.ForeignKey(
+        Client,
+        on_delete=models.CASCADE,
+        related_name="mlscores",
+    )
+    score = models.PositiveIntegerField()
+
+    def __str__(self) -> str:
+        return f"{self.advertiser.name} | {self.client.login}"
+
+    class Meta:
+        unique_together = (
+            "advertiser",
+            "client",
+        )