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/Authentication/Token/SwitchUserToken.php

@@ -0,0 +1,66 @@
+<?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\Authentication\Token;
+
+use Symfony\Component\Security\Core\User\UserInterface;
+
+/**
+ * Token representing a user who temporarily impersonates another one.
+ *
+ * @author Christian Flothmann <christian.flothmann@sensiolabs.de>
+ */
+class SwitchUserToken extends UsernamePasswordToken
+{
+    private TokenInterface $originalToken;
+    private ?string $originatedFromUri = null;
+
+    /**
+     * @param $user              The username (like a nickname, email address, etc.), or a UserInterface instance or an object implementing a __toString method
+     * @param $originatedFromUri The URI where was the user at the switch
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function __construct(UserInterface $user, string $firewallName, array $roles, TokenInterface $originalToken, ?string $originatedFromUri = null)
+    {
+        parent::__construct($user, $firewallName, $roles);
+
+        $this->originalToken = $originalToken;
+        $this->originatedFromUri = $originatedFromUri;
+    }
+
+    public function getOriginalToken(): TokenInterface
+    {
+        return $this->originalToken;
+    }
+
+    public function getOriginatedFromUri(): ?string
+    {
+        return $this->originatedFromUri;
+    }
+
+    public function __serialize(): array
+    {
+        return [$this->originalToken, $this->originatedFromUri, parent::__serialize()];
+    }
+
+    public function __unserialize(array $data): void
+    {
+        if (3 > \count($data)) {
+            // Support for tokens serialized with version 5.1 or lower of symfony/security-core.
+            [$this->originalToken, $parentData] = $data;
+        } else {
+            [$this->originalToken, $this->originatedFromUri, $parentData] = $data;
+        }
+        $parentData = \is_array($parentData) ? $parentData : unserialize($parentData);
+        parent::__unserialize($parentData);
+    }
+}