/home/preegmxb/byeaglytics-co.com/plugins/installer/packageinstaller/packageinstaller.php
<?php
/**
 * @package     Joomla.Plugin
 * @subpackage  Installer.packageInstaller
 *
 * @copyright   (C) 2016 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

use Joomla\CMS\Language\Text;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\CMS\Plugin\PluginHelper;

/**
 * PackageInstaller Plugin.
 *
 * @since  3.6.0
 */
class PlgInstallerPackageInstaller extends CMSPlugin
{
	/**
	 * Application object
	 *
	 * @var    \Joomla\CMS\Application\CMSApplication
	 * @since  4.0.0
	 */
	protected $app;

	/**
	 * Textfield or Form of the Plugin.
	 *
	 * @return  array  Returns an array with the tab information
	 *
	 * @since   3.6.0
	 */
	public function onInstallerAddInstallationTab()
	{
		// Load language files
		$this->loadLanguage();

		$tab            = array();
		$tab['name']    = 'package';
		$tab['label']   = Text::_('PLG_INSTALLER_PACKAGEINSTALLER_UPLOAD_PACKAGE_FILE');

		// Render the input
		ob_start();
		include PluginHelper::getLayoutPath('installer', 'packageinstaller');
		$tab['content'] = ob_get_clean();

		return $tab;
	}
}