Add new anonymous page hooks

- ADD_CSS_ANONYMOUS_PAGE
- ADD_JAVASCRIPT_ANONYMOUS_PAGE
- ADD_JAVASCRIPT_MODULE_ANONYMOUS_PAGE
- ADD_HEADER_TAG_ANONYMOUS

mymodule_anonymous.js

@@ -0,0 +1,31 @@
+
+/**
+ * -------------------------------------------------------------------------
+ * Example plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of Example.
+ *
+ * Example 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Example 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 Example. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2006-2022 by Example plugin team.
+ * @license   GPLv2 https://www.gnu.org/licenses/gpl-2.0.html
+ * @link      https://github.com/pluginsGLPI/example
+ * -------------------------------------------------------------------------
+ */
+
+/* empty JS module file */
+export {};