Added the ability to save user settings.

app/Dto/Request/Private/Profile/UpdateSettings.php

@@ -0,0 +1,24 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Request\Private\Profile;
+
+use App\Dto\Request\Dto;
+use App\Enums\Lang;
+
+final readonly class UpdateSettings extends Dto
+{
+    public function __construct(
+        private ?Lang $lang,
+        private ?string $timezone
+    ) { }
+
+    public function getLang(): ?Lang
+    {
+        return $this->lang;
+    }
+
+    public function getTimezone(): ?string
+    {
+        return $this->timezone;
+    }
+}