Add hoa://Library/Stream component.

It helps to reach an existing handler according to its name. It is based
on the new getStreamHandler() static method. Example:

    $a = new Hoa\File\Read(__FILE__);
    $b = resolve('hoa://Library/Stream#' . __FILE__);

    var_dump($a === $b); // bool(true), strictly the same object!

Bonus (but logic):

    $a->close();
    var_dump(resolve('hoa://Library/Stream#' . __FILE__)); // NULL