feat(booking): Implement train schedule selection and update booking data structures

packages/types/src/freight/index.ts

@@ -463,9 +463,9 @@ export interface CreateBookingContainerDto {
 
 export interface CreateBookingDto {
   reference?: string;
-  customerId?: string;
   companyId?: string;
   trainId?: string;
+  trainScheduleId?: string;
   scheduledDate: string;
   contractType: "NEW" | "RENEWAL";
   previousContractId?: string;