SwissQR: add Sprain\SwissQrBill and dependencies

htdocs/includes/symfony/validator/Constraints/NotIdenticalToValidator.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Constraints;
+
+/**
+ * Validates values aren't identical (!==).
+ *
+ * @author Daniel Holmes <daniel@danielholmes.org>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class NotIdenticalToValidator extends AbstractComparisonValidator
+{
+    protected function compareValues(mixed $value1, mixed $value2): bool
+    {
+        return $value1 !== $value2;
+    }
+
+    protected function getErrorCode(): ?string
+    {
+        return NotIdenticalTo::IS_IDENTICAL_ERROR;
+    }
+}