feat: executors and grouping by article in deal document

routers/deal.py

@@ -7,6 +7,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 from backend.dependecies import SessionDependency, CurrentUserDependency
 from backend.session import get_session
+from generators.deal_pdf_generator.generator import DealPdfGenerator
 from models import User
 from schemas.barcode import GetDealProductsBarcodesPdfRequest, GetDealProductsBarcodesPdfResponse
 from schemas.deal import *
@@ -202,7 +203,7 @@ async def get_detailed_deal_document(
         deal_id: int,
         session: Annotated[AsyncSession, Depends(get_session)],
 ):
-    pdf_file: BytesIO = await DealService(session).create_detailed_deal_document_pdf(deal_id)
+    pdf_file: BytesIO = await DealPdfGenerator(session).create_detailed_deal_document_pdf(deal_id)
     return Response(pdf_file.getvalue(), media_type='application/pdf')