Move Wayland meta packages to LightDM and replace ConsoleKit2 for
elogind for Plasma.
Now we don't need the hacky scripts in /etc/profile.d anymore!
This change requires elogind for both Weston and Plasma Mobile. Using
elogind allows us to use one patch less in kwin. Weston has logind
(which elogind provides) support disabled in Alpine Linux, so I put the
package in temp/ with it enabled for now, but will upstream this change
to Alpine.
Remove consolekit2 dependency in postmarketos-ui-xfce4.
[ci:skip-build]: already built successfully.
