Remove the vendor directory in .gitignore as these dependencies are needed for php-imap

plugins/php-imap/vendor/symfony/translation/Dumper/JsonFileDumper.php

@@ -0,0 +1,34 @@
+<?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\Translation\Dumper;
+
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * JsonFileDumper generates an json formatted string representation of a message catalogue.
+ *
+ * @author singles
+ */
+class JsonFileDumper extends FileDumper
+{
+    public function formatCatalogue(MessageCatalogue $messages, string $domain, array $options = []): string
+    {
+        $flags = $options['json_encoding'] ?? \JSON_PRETTY_PRINT;
+
+        return json_encode($messages->all($domain), $flags);
+    }
+
+    protected function getExtension(): string
+    {
+        return 'json';
+    }
+}