Adding /vendor directory to release

Author: nefeline

vendor/autoload.php

@@ -0,0 +1,7 @@
+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInit96aef49266fbd314a42ac0c45d02681f::getLoader();

vendor/autoload_packages.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * This file was automatically generated by automattic/jetpack-autoloader.
+ *
+ * @package automattic/jetpack-autoloader
+ */
+
+namespace Automattic\Jetpack\Autoloader\jp96aef49266fbd314a42ac0c45d02681f;
+
+ // phpcs:ignore
+
+require_once __DIR__ . '/jetpack-autoloader/class-autoloader.php';
+Autoloader::init();

vendor/automattic/jetpack-autoloader/.gitignore

@@ -0,0 +1 @@
+tests/php/tmp

vendor/automattic/jetpack-autoloader/.phpcs.dir.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<ruleset>
+
+	<!-- This doesn't run inside of WordPress, do we don't need to use WordPress's alternative functions. -->
+	<rule ref="WordPress.WP.AlternativeFunctions">
+		<severity>0</severity>
+	</rule>
+
+</ruleset>