schedule explicit set levels

backend/app/Set/UseCases/GetSetLayout/SetLayoutLevel.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Set\UseCases\GetSetLayout;
+
+use App\Set\SetLevel;
+
+final readonly class SetLayoutLevel
+{
+    public function __construct(
+        private SetLevel $level,
+        private int $elementCount,
+    ) {}
+
+    public function getLevel(): SetLevel
+    {
+        return $this->level;
+    }
+
+    public function getElementCount(): int
+    {
+        return $this->elementCount;
+    }
+}