SwissQR: add Sprain\SwissQrBill and dependencies

htdocs/includes/symfony/validator/ObjectInitializerInterface.php

@@ -0,0 +1,26 @@
+<?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;
+
+/**
+ * Prepares an object for validation.
+ *
+ * Concrete implementations of this interface are used by {@link Validator\ContextualValidatorInterface}
+ * to initialize objects just before validating them.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface ObjectInitializerInterface
+{
+    public function initialize(object $object);
+}