feat: get deals endpoint

routes/deal.py

@@ -0,0 +1,22 @@
+from fastapi import APIRouter
+
+from backend.dependecies import SessionDependency
+from schemas.deal import GetDealsResponse
+from services.deal import DealService
+
+deal_router = APIRouter(
+    prefix="/deal",
+    tags=["deal"],
+)
+
+
+@deal_router.get(
+    "/{board_id}",
+    response_model=GetDealsResponse,
+    operation_id="get_deals",
+)
+async def get_deals(
+    session: SessionDependency,
+    board_id: int,
+):
+    return await DealService(session).get_deals(board_id)