vendor and env first commit

vendor/league/commonmark/src/Extension/GithubFlavoredMarkdownExtension.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\Autolink\AutolinkExtension;
+use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
+use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\Extension\TaskList\TaskListExtension;
+
+final class GithubFlavoredMarkdownExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment->addExtension(new AutolinkExtension());
+        $environment->addExtension(new DisallowedRawHtmlExtension());
+        $environment->addExtension(new StrikethroughExtension());
+        $environment->addExtension(new TableExtension());
+        $environment->addExtension(new TaskListExtension());
+    }
+}