feat: get deals endpoint

repositories/deal.py

@@ -0,0 +1,11 @@
+from sqlalchemy import select
+
+from models import Deal
+from repositories.base import BaseRepository
+
+
+class DealRepository(BaseRepository):
+    async def get_all(self, board_id: int) -> list[Deal]:
+        stmt = select(Deal).where(Deal.is_deleted.is_(False), Deal.board_id == board_id)
+        result = await self.session.execute(stmt)
+        return list(result.scalars().all())