Add Composer autoloading functions and PHPStan for testing

vendor/symfony/console/Input/InputAwareInterface.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\Console\Input;
+
+/**
+ * InputAwareInterface should be implemented by classes that depends on the
+ * Console Input.
+ *
+ * @author Wouter J <waldio.webdesign@gmail.com>
+ */
+interface InputAwareInterface
+{
+    /**
+     * Sets the Console Input.
+     */
+    public function setInput(InputInterface $input);
+}