wmp: Add semistub IWMPSettings invokeURLs, enableErrorDialogs and autoStart properties implementation.

WPF's MediaPlayer class expects those not to fail.
Signed-off-by: Anton Romanov <theli.ua@gmail.com>
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>