The dialog invoked through user actions menu takes the internal uuid as
command line argument which allows to query the required information
from KWin instead of using X11.
This allows to enable the system for Wayland windows.
In order to replace the usage of ClientMachine in the rules dialog the
dbus interface is extended by a value whether the window is on the
localhost. This is exposed through a virtual method on toplevel which is
overridden in ShellClient and there always returning true.