Split KSslErrorUiData from KTcpSocket
Summary:
The former we want to keep, the latter we want to deprecate, so this is
a necessary first step to detangle them.
Reviewers: dfaure, aacid
Reviewed By: aacid
Subscribers: aacid, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D23825