Copyright for ukui-previewhub source package in Huanghe V3.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: ukui-previewhub
Source: https://www.kylinos.cn/

Files: *
Copyright: 2021 KylinSoft Co., Ltd.
           2026 UKUI / package maintainers
License: LGPL-3+
 The preview implementation is derived from Peony-Qt preview plugins
 licensed under the GNU LGPL v3 or later. On Debian systems see
 /usr/share/common-licenses/LGPL-3.

Files: debian/*
Copyright: 2026 UKUI Team
License: LGPL-3+