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

plugins/php-imap/vendor/illuminate/contracts/Auth/MustVerifyEmail.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Illuminate\Contracts\Auth;
+
+interface MustVerifyEmail
+{
+    /**
+     * Determine if the user has verified their email address.
+     *
+     * @return bool
+     */
+    public function hasVerifiedEmail();
+
+    /**
+     * Mark the given user's email as verified.
+     *
+     * @return bool
+     */
+    public function markEmailAsVerified();
+
+    /**
+     * Send the email verification notification.
+     *
+     * @return void
+     */
+    public function sendEmailVerificationNotification();
+
+    /**
+     * Get the email address that should be used for verification.
+     *
+     * @return string
+     */
+    public function getEmailForVerification();
+}