This lib was designed for apps with multiple packages in a way to register Symfony console commands in an easy way.
$command = new YourSymfonyCommand();
\Lkt\Commander\Commander::register($command);
In your cli.php:
\Lkt\Commander\Commander::run();
Alternatively, if not all console commands uses LKT Commander, you can get the Symfony application this way:
$application = \Lkt\Commander\Commander::getApplication();
// Your stuff...
$application->run();