Add proper attribution for migrated SkyVerge plugin framework files

[message-dimke]

Update SkyVerge migrated files under includes/Framework by adding SkyVerge attributes to it and adding WooCommerce as a co-author for all the migrated files.

Was

/**
 * WooCommerce Admin Message Handler
 *
 * This source file is subject to the GNU General Public License v3.0
 * that is bundled with this package in the file license.txt.
 * It is also available through the world-wide-web at this URL:
 * http://www.gnu.org/licenses/gpl-3.0.html
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@skyverge.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade the plugin to newer
 * versions in the future. If you wish to customize the plugin for your
 * needs please refer to http://www.skyverge.com/
 *
 * @package     SkyVerge/WordPress/WP-Admin-Message-Handler
 * @author      SkyVerge
 * @copyright   Copyright (c) 2013-2019, SkyVerge, Inc.
 * @license     http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0
 */

Modify to something like this:

/**
 * WooCommerce Admin Message Handler
 *
 * This source file is subject to the GNU General Public License v3.0
 * that is bundled with this package in the file license.txt.
 * It is also available through the world-wide-web at this URL:
 * http://www.gnu.org/licenses/gpl-3.0.html
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@skyverge.com so we can send you a copy immediately.
 *
 * @author      WooCommerce / SkyVerge
 * @copyright   Copyright (c) 2013-2019, SkyVerge, Inc.
 * @copyright   Copyright (c) 2021-2022, WooCommerce
 * @license     http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0
 * Modified by WooCommerce on 01 Dececember 2021
 */

NOTE: Currently all the files have no attributes and phpDoc headers on them. Also starting phpDoc v2 it is valid to have multiple @author attributes.

e.g.

/**
 * ...
 * @author SkyVerge
 * @author WooCommerce
 * ...
 */