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/form/Guess/ValueGuess.php

@@ -0,0 +1,40 @@
+<?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\Form\Guess;
+
+/**
+ * Contains a guessed value.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ValueGuess extends Guess
+{
+    private string|int|bool|null $value;
+
+    /**
+     * @param int $confidence The confidence that the guessed class name is correct
+     */
+    public function __construct(string|int|bool|null $value, int $confidence)
+    {
+        parent::__construct($confidence);
+
+        $this->value = $value;
+    }
+
+    /**
+     * Returns the guessed value.
+     */
+    public function getValue(): string|int|bool|null
+    {
+        return $this->value;
+    }
+}