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/DataAccessorInterface.php

@@ -0,0 +1,50 @@
+<?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;
+
+/**
+ * Writes and reads values to/from an object or array bound to a form.
+ *
+ * @author Yonel Ceruto <yonelceruto@gmail.com>
+ */
+interface DataAccessorInterface
+{
+    /**
+     * Returns the value at the end of the property of the object graph.
+     *
+     * @throws Exception\AccessException If unable to read from the given form data
+     */
+    public function getValue(object|array $viewData, FormInterface $form): mixed;
+
+    /**
+     * Sets the value at the end of the property of the object graph.
+     *
+     * @throws Exception\AccessException If unable to write the given value
+     */
+    public function setValue(object|array &$viewData, mixed $value, FormInterface $form): void;
+
+    /**
+     * Returns whether a value can be read from an object graph.
+     *
+     * Whenever this method returns true, {@link getValue()} is guaranteed not
+     * to throw an exception when called with the same arguments.
+     */
+    public function isReadable(object|array $viewData, FormInterface $form): bool;
+
+    /**
+     * Returns whether a value can be written at a given object graph.
+     *
+     * Whenever this method returns true, {@link setValue()} is guaranteed not
+     * to throw an exception when called with the same arguments.
+     */
+    public function isWritable(object|array $viewData, FormInterface $form): bool;
+}