Add contract booking windows feature

apps/edr-freight-api/src/modules/train-scheduling/train-scheduling.controller.ts

@@ -70,6 +70,17 @@ export class TrainSchedulingController {
     return this.trainSchedulingService.getBookingWindowsForCompany(companyId);
   }
 
+  @Get("contracts/:contractId/booking-windows")
+  @ApiOperation({
+    summary:
+      "Upcoming/open booking windows on a contract's routes — gates the booking form for customer + Ethiopian GL",
+  })
+  getContractBookingWindows(
+    @Param("contractId", ParseUUIDPipe) contractId: string,
+  ) {
+    return this.trainSchedulingService.getBookingWindowsForContract(contractId);
+  }
+
   @Get("global-rules")
   @TrainSchedulingView()
   @ApiOperation({ summary: "Get global train scheduling rules (singleton)" })