Feat: Refactoring Shipping DataTransferObjects to DTOs namespace

src/Shipping/DTOs/TrackingCheckpoint.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Modules\Core\Shipping\DTOs;
+
+use Carbon\CarbonInterface;
+use Modules\Core\Shipping\Enums\TrackingStatus;
+
+/**
+ * One normalized checkpoint in a shipment's carrier-reported history.
+ * Returned (potentially several at once) by SupportsTracking::trackShipment().
+ */
+class TrackingCheckpoint
+{
+    public function __construct(
+        public readonly TrackingStatus $status,
+        public readonly ?string $carrierStatus,
+        public readonly ?string $message,
+        public readonly ?string $location,
+        public readonly CarbonInterface $occurredAt,
+        public readonly array $meta = [],
+    ) {}
+}