feat: add payback date

prisma/schema.prisma

@@ -1612,6 +1612,7 @@ model CreditNote {
   paybackAccount     String?
   paybackAccountName String?
   paybackStatus      PaybackStatus          @default(Pending)
+  paybackDate        DateTime?
 
   quotation   Quotation @relation(fields: [quotationId], references: [id], onDelete: Cascade)
   quotationId String

src/controllers/08-credit-note-controller.ts

@@ -557,6 +557,7 @@ export class CreditNoteActionController extends Controller {
         creditNoteStatus:
           body.paybackStatus === PaybackStatus.Done ? CreditNoteStatus.Success : undefined,
         paybackStatus: body.paybackStatus,
+        paybackDate: body.paybackStatus === PaybackStatus.Done ? new Date() : undefined,
       },
     });
   }