Move fetching documentation data in new command

The former task was deactivated and therefore the data is not up to date

extensions/ter_fe2/Classes/Command/FetchDocumentationStatus.php

+<?php
+
+namespace T3o\TerFe2\Command;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use TYPO3\CMS\Core\Core\Environment;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+class FetchDocumentationStatus extends Command
+{
+    /**
+     * @var string
+     */
+    protected $documentationFileName = 'currentdocumentationdata.json';
+
+    /**
+     * @var string
+     */
+    protected $sourceUrl = 'https://intercept.typo3.com/assets/docs/manuals.json';
+
+    protected function configure()
+    {
+        $this->setDescription('Fetches the current documentation JSON file for extensions that use intercept');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        $sourceData = GeneralUtility::getUrl($this->sourceUrl);
+        if (json_decode($sourceData, true) !== null) {
+            $targetFile = Environment::getPublicPath() . '/' . $GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'] . $this->documentationFileName;
+            if (GeneralUtility::writeFile($targetFile, $sourceData)) {
+                $io->success('Documentation file has been updated');
+            } else {
+                $io->error('Error during update of documentation file');
+            }
+        } else {
+            $io->warning('Source file is not a valid JSON file');
+        }
+    }
+}