Introduce an adoption command in the wallpaper knsrc file
Summary:
Using the same semantics as the InstallationCommand, makes it possible for the
client to get a kns resource adopted.
Needs further standarization, I have implemented this on Discover and seems
to work just fine.
Reviewers: whiting, leinir, Plasma, mart
Reviewed By: mart
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D4307