Added support for Windows 10 by filtering out cloaked apps

[vhanla]

This fixes issue #36

It just calls DwmGetWindowAttribute(hWnd, DWMWA_CLOAKED, out int cloaked, sizeof(int)) and if it is a visible Windows App it will return in cloaked the value 0 otherwise it means the app is cloaked(aka hidden) as https://docs.microsoft.com/en-us/windows/win32/api/dwmapi/ne-dwmapi-dwmwindowattribute mentions.

It seems that newline format made the diff unusable, so here are the modifications:

//line 54
 [DllImport("dwmapi.dll")]
        private static extern int DwmGetWindowAttribute(IntPtr hWnd, int dwAttribute, out int pvAttribute, int cbAttribute);
//line 79
		    //if (className == "ApplicationFrameWindow")
			   // InspectWindows10AppWindow(hWnd, windows, className);
		    //else
			    InspectNormalWindow(hWnd, currentProcessId, windows, className);
	    }

		private static void InspectNormalWindow(IntPtr hWnd, int currentProcessId, ICollection<IWindowEntry> windows, string className)
		{
            if (className == "ApplicationFrameWindow")
            {
                // check if windows is not cloaked
                const int DWMWA_CLOAKED = 14;
                DwmGetWindowAttribute(hWnd, DWMWA_CLOAKED, out int cloaked, sizeof(int));
                if (cloaked != 0) return;
            }
// continues, and no more modifications was done

[christianrondeau]

Thanks a lot! Merged and published!