Skip to next workshop level command

[ThisAMJ]

It would be nice to have a command that shortcuts the "Skip to next level" menu option in SAR. Even if not allowed in runs, it would be useful for resetting MRCC runs, or in casual play.

For reference, this is how the game handles the menu option:

static void SkipToNextLevelOkCallback()
{
    InGameMainMenu *pSelf = 
        static_cast< InGameMainMenu* >( BASEMODPANEL_SINGLETON.GetWindow( WT_INGAMEMAINMENU ) );

    Assert( pSelf );
    if ( pSelf )
    {
        pSelf->PostMessage( pSelf, new KeyValues( "MsgPreSkipToNextLevel" ), 0.0f );
    }
}