add missing licence headers

hook.php

@@ -1,5 +1,33 @@
 <?php
 
+/**
+ * -------------------------------------------------------------------------
+ * Deploy plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of Deploy.
+ *
+ * Deploy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Deploy is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Deploy. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2022-2024 by Deploy plugin team.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://github.com/pluginsGLPI/deploy
+ * -------------------------------------------------------------------------
+ */
+
 use GlpiPlugin\Deploy\Computer\Group;
 use GlpiPlugin\Deploy\Computer\GroupDynamic;
 use GlpiPlugin\Deploy\Computer\GroupStatic;