feat: add stub implementation for image

QRCodeFromEntity

fix: base64 StubQRCodeGenerator

src/Service/QRCodeGeneratorInterface.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\QRCode\QRCode;
+
+interface QRCodeGeneratorInterface
+{
+    /**
+     * Generates QR code from entity
+     * @param QRCode $entity
+     * @return string base64 encoded PNG
+     */
+    public function generateQRCodeFromEntity(QRCode $entity): string;
+}