settings.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Local plugin "Learning Tools" - settings file.
 * @package   local_learningtools
 * @copyright bdecent GmbH 2021
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

global $CFG;

if ($hassiteconfig) {
    $ADMIN->add('localplugins', new admin_category('local_learningtools',
            get_string('pluginname', 'local_learningtools', null, true)));

    $page = new admin_settingpage('local_learningtools_settings',
            get_string('learningtoolssettings', 'local_learningtools', null, true));

    if ($ADMIN->fulltree) {

        $page->add(new admin_setting_configtext(
            'local_learningtools/notificationdisapper',
            new lang_string('notificationdisappertitle', 'local_learningtools'),
            new lang_string('notificationdisapperdesc', 'local_learningtools'),
            0
        ));

        $page->add(new admin_setting_heading('learningtoolsusermenu',
            new lang_string('ltoolsusermenu', 'local_learningtools'),
            new lang_string('ltoolusermenu_help', 'local_learningtools')));
        $page->add(new admin_setting_description('bookmarksusermenu',
            new lang_string('bookmarksusermenu', 'local_learningtools'),
            new lang_string('bookmarksusermenu_help', 'local_learningtools')));
        $page->add(new admin_setting_description('notesusermenu',
            new lang_string('notesusermenu', 'local_learningtools'),
            new lang_string('notesusermenu_help', 'local_learningtools')));

    }
    $ADMIN->add('local_learningtools', $page);

    $ADMIN->add('local_learningtools', new admin_externalpage('local_learningtools_lttool',
        get_string('learningtoolsltool', 'local_learningtools'),
        "$CFG->wwwroot/local/learningtools/learningtoolslist.php"));

}