feat(train-scheduling): implement container movement between wagons

- Added functionality to move containers between wagons in the train scheduling system.
- Introduced  API endpoint and service method to handle container movement.
- Updated  component to support drag-and-drop for rearranging containers.
- Enhanced  to allow moving containers to other wagons via a context menu.
- Implemented UI feedback for container movement actions, including loading states and success/error notifications.
- Updated relevant types and constants to accommodate new container movement logic.
- Added tests for the rule engine to ensure proper handling of hazardous bookings.

apps/edr-freight-api/src/modules/train-scheduling/dto/move-container-item.dto.ts

@@ -0,0 +1,14 @@
+import { IsOptional, IsUUID } from 'class-validator';
+
+export class MoveContainerItemDto {
+  @IsUUID()
+  targetTrainSetWagonId!: string;
+
+  /**
+   * Swap with this container on the target wagon instead of requiring free
+   * space there. Same-wagon swaps exchange the two slot positions.
+   */
+  @IsUUID()
+  @IsOptional()
+  swapWithItemId?: string;
+}