Get current language input layout

[SR_team]

В письме от понедельник, 20 сентября 2021 г. 00:58:07 MSK пользователь David 
Edmundson написал:
> There is a DBus interface at org.kde.KWin /Layouts
> 
> It should have everything you need and work on X11 too.
> 
> David

Thanks, but I found `/Layouts` in `org.kde.keyboard`, instead of 
`org.kde.KWin`. `org.kde.KWin` does not contain `/Layouts` on my system 
(Archlinux, KDE 5.22.5, KDE Frameworks 5.86.0)