Core/Gui split for KUriFilterPlugin
Create the KCModule instance via a separate registration in the plugin rather than via a virtual method of KUriFilterPlugin (with a QWidget argument).
In KF6 this will allow moving all KUriFilter-related classes to KIOCore (well, or KIOGui if we can't get rid of the KIconLoader::loadPath usage)
KF6 task: https://phabricator.kde.org/T14306