kcms: Port to kcmutils_add_qml_kcm and org.kde.config QML module
kcmutils_add_qml_kcm creates a QRC that contains the "ui" folder. This this simplifies the installation of KCMs, because all needed files are bundled with the plugin. In KCMUtils this means we can get rid of KPackage.
The new org.kde.kcmutils QML module also contains the org.kde.kcm components that were previously part of KDeclarative.
Depends on frameworks/kcmutils!146 (merged)