feat: add schedule start and end validation in OrderSchema

- Introduced new validation fields for schedule start and end times in the OrderSchema to ensure accurate scheduling.
- This enhancement aims to improve the integrity of scheduling operations by validating the start and end times against the provided schedule data.

src/Order/order.schema.ts

@@ -432,6 +432,12 @@ export class OrderSchema extends PothosSchema {
                       (scheduleDate) => scheduleDate.scheduleId
                     ),
                   },
+                  start: {
+                    equals: args.data.schedule.connect?.scheduleStart as Date,
+                  },
+                  end: {
+                    equals: args.data.schedule.connect?.scheduleEnd as Date,
+                  },
                 },
               ],
             },