[applets] Show KCMs in System Settings
Summary:
CCBUG: 417836
Depends on D29711
As this will depend on Frameworks 5.71, it will be landed on master after branching,
ending up in Plasma 5.20.
Test Plan:
Right-click on applets and activate their configure menu items
Open Kickoff and click on avatar
Observe that the KCMs are opened in System Settings
Reviewers: mart, Plasma
Reviewed By: mart, Plasma
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D29713