N°8771 - Add Symfony form component to iTop core (#760)

- Add Symfony Form Component
- Add Symfony CSRF security component
- Add iTop default form template
- Add Twig debug extension to Twig Environment
- Add iTop abstract controller facility to get form builder
- Add Twig filter to make trans an alias of dict_s filter

lib/symfony/security-core/Event/AuthenticationEvent.php

@@ -0,0 +1,38 @@
+<?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\Security\Core\Event;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Contracts\EventDispatcher\Event;
+
+/**
+ * This is a general purpose authentication event.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class AuthenticationEvent extends Event
+{
+    private TokenInterface $authenticationToken;
+
+    public function __construct(TokenInterface $token)
+    {
+        $this->authenticationToken = $token;
+    }
+
+    /**
+     * @return TokenInterface
+     */
+    public function getAuthenticationToken()
+    {
+        return $this->authenticationToken;
+    }
+}