first commit

app/sources/base.py

@@ -0,0 +1,13 @@
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+
+from app.models import Offer
+
+
+class OfferSource(ABC):
+    source_name: str
+
+    @abstractmethod
+    def fetch_offers(self) -> list[Offer]:
+        raise NotImplementedError