This PR adds a new class AppFactory which will allow an alternative syntax for creating a Minicli application.

Currently, to create an app you need to:

$app = new App(
    config: [
        'app_path' => [
        __DIR__ . '/app/Command',
    ],
    'theme' => '\Unicorn', 
    'debug' => false,
    ],
);

You will now be able to use this approach and get the same result:

$app = AppFactory::make(
    config: [
        'app_path' => [
        __DIR__ . '/app/Command',
    ],
    'theme' => '\Unicorn', 
    'debug' => false,
    ],
);

This approach is more of a Developer Experience improvement than an actual improvement to the library.