feat: add CachedQRCodeProvider

src/Service/CacheableQRCodeGeneratorInterface.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\QRCode\QRCode;
+
+interface CacheableQRCodeGeneratorInterface extends QRCodeGeneratorInterface
+{
+    // We can't calculate cache key directly from QRCode
+    public function getCacheKey(QRCode $entity): string;
+}