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/User/MissingUserProvider.php

@@ -0,0 +1,53 @@
+<?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\User;
+
+use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
+
+/**
+ * MissingUserProvider is a dummy user provider used to throw proper exception
+ * when a firewall requires a user provider but none was defined.
+ *
+ * @internal
+ *
+ * @template-implements UserProviderInterface<never>
+ */
+class MissingUserProvider implements UserProviderInterface
+{
+    /**
+     * @param string $firewall the firewall missing a provider
+     */
+    public function __construct(string $firewall)
+    {
+        throw new InvalidConfigurationException(\sprintf('"%s" firewall requires a user provider but none was defined.', $firewall));
+    }
+
+    public function loadUserByUsername(string $username): UserInterface
+    {
+        throw new \BadMethodCallException();
+    }
+
+    public function loadUserByIdentifier(string $identifier): UserInterface
+    {
+        throw new \BadMethodCallException();
+    }
+
+    public function refreshUser(UserInterface $user): UserInterface
+    {
+        throw new \BadMethodCallException();
+    }
+
+    public function supportsClass(string $class): bool
+    {
+        throw new \BadMethodCallException();
+    }
+}