A way to find classes of windows for which the methods from README don't work

[taj-ny]

The methods to get window classes described in the README don't work for some windows, such as all context menus (they disappear immediately when using the qdbus method), Spectacle's Wayland recording window and probably some more.

I thought about just logging some information whenever a window is added, but that would require users to launch KWin in a terminal, which is not very convenient. Another approach would be to display some information about the last n added windows in a table in the options.

Resource name	Resource class	Window type	Size
spectacle	spectacle	Normal	1920x1080
firefox	firefox	Normal	521x899

[sf467]

use it
qdbus org.kde.KWin /KWin org.kde.KWin.showDebugConsole
and you will get all classes of windows