Refactor authentication system (#2602)

Make auth configuration available via UI, remove FOSUserBundle and SAML-Bundle dependency

src/Event/EmailEvent.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Event;
+
+use Symfony\Component\Mime\Email;
+use Symfony\Contracts\EventDispatcher\Event;
+
+class EmailEvent extends Event
+{
+    private $email;
+
+    public function __construct(Email $email)
+    {
+        $this->email = $email;
+    }
+
+    public function getEmail(): Email
+    {
+        return $this->email;
+    }
+}