[binary-clock] Port configuration window to QQC2 and Kirigami.FormLayout
Summary: This patch ports binary-clock's configuration window to QQC2 and Kirigami.FormLayout.
Test Plan:
Before:
After:
Reviewers: VDG, Plasma, ngraham
Reviewed By: VDG, ngraham
Subscribers: abetts, ngraham, plasma-devel
Tags: Plasma
Maniphest Tasks: T10586
Differential Revision: https://phabricator.kde.org/D19669