Updates Plasma 5.19 Wayland

Thanks to Aleix Pol, Wayland plasma KWin 5.19 now supports tablets protocol, which means that we support touch and pen support.

Resizing XWayland windows has become smoother and fits the X experience. However, it needs the next version of XWayland 1.21 to work.

And KWin has had several changes under the surface.

The KWayland Library was a library divided into two libraries. One KWayland contains KWayland :: Client - the usual stuff, but the new kwayland server now contains KWayland :: Server.

The global Plasma application menu now works in Wayland thanks to the Carson Black patch series.

The task manager can now bring multiple windows of the same program