use QLoggingCategory for logging
Summary:
Logging with QLoggingCategory instead of QtGlobal functions (qDebug, qInfo, etc)
allow users to filter out unwanted messages with kdebugsettings and qtlogging.ini
Reviewers: mlaurent
Reviewed By: mlaurent
Subscribers: mlaurent, kde-pim
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D26246