Feature/Added Data Transfer Object. (#11)

- Added base abstract class extended from Spatie/DataTransferObject to handle DTO's.

composer.json

@@ -15,7 +15,8 @@
     "ext-json": "*",
     "ramsey/uuid": "^4.1",
     "nesbot/carbon": "^2.40",
-    "illuminate/collections": "^8.20"
+    "illuminate/collections": "^8.20",
+    "spatie/data-transfer-object": "^2.6"
   },
   "require-dev": {
     "ext-xdebug": "*",

src/Application/DTO/DTO.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OtherCode\ComplexHeart\Application\DTO;
+
+use Spatie\DataTransferObject\DataTransferObject;
+
+/**
+ * Class DTO
+ *
+ * An abstract class that acts as an interface between the Spatie/DataTransferObject,
+ * so, in case the library changes, it will be necessary to change only this file to
+ * provide the same functionality as before.
+ *
+ * @author Unay Santisteban <usantisteban@othercode.es>
+ * @package OtherCode\ComplexHeart\Application\DTO
+ */
+abstract class DTO extends DataTransferObject
+{
+
+}