Move protocol-related utilities to ProtocolInfo
Summary:
With that there are only two small remaining methods in utils.h, both
unrelated to KDAV as such (and one even unused inside KDAV), so those
can move to the resource and we can get rid of utils.h entirely, and with
it QtXML in the public interface.
Reviewers: mlaurent
Reviewed By: mlaurent
Subscribers: kde-pim
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D24291