[Wayland] Windows menu segfaults

[probonopd]

Menu crashes under Wayland.

Workaround: Move libwindows.so away. Unwelcome side effect: We lose the upper-right corner window that we are using to manage windows (instead of a taskbar).

A Wayland version of it would probably have to basically be rewritten by someone knowledgable in Wayland.

[probonopd]

https://github.com/johanmalm/tint by @johanmalm is a proof-of-concept panel written in Qt that can run on Wayfire and can show icons for the open windows, minimize and unminimize windows.

It uses wlr-foreign-toplevel-management-unstable-v1.

Possibly we'd need to write a libwaylandwindows.so using similar code? Or is there something native in Kf5 that would do the same thing (but not just for KWin)?