Summary:
Replacement KCM to configure kwin rules, using a QML-based UI.
After some work on the task T12729, it is almost feature-par with the previous module, and adapted to the recent move to KConfigXT.
Test Plan:
{F8208046}
{F8208047}
Reviewers: #plasma, #kwin, #vdg, ngraham, davidedmundson, zzag
Reviewed By: #plasma, #kwin, #vdg, ngraham, davidedmundson, zzag
Subscribers: ngraham, davidedmundson, hchain, broulik, zzag, kwin
Tags: #kwin, #vdg
Differential Revision: https://phabricator.kde.org/D28152
