Summary:
A rewrite of the Virtual Desktops KCM using the new DBus
API.
Depends on D13887.
Reviewers: mart, davidedmundson, ltoscano, zzag
Subscribers: davidedmundson, broulik, plasma-devel, kwin
Tags: #kwin
Maniphest Tasks: T4457
Differential Revision: https://phabricator.kde.org/D14542
