Cyril Rossi authored Feb 12, 2021 and Nate Graham committed Feb 12, 2021

Currently the highlight is only for the items. KCModuleData will come in another MR.
This is more simple implementation than the one I previously made.

Some default value are hardcoded in the KCM such as Rows count (2) and the number
of virtual desktop, on revert to default, it keeps only the first one.