Copyright for snooze source package in Noble

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: snooze
Source: https://git.vuxu.org/snooze/about/

Files: *
Copyright: Copyright (c) 2016-2020 Leah Neukirchen 
License: CC0-1.0

Files: debian/*
Copyright: Copyright (c) 2017-2020 nicoo 
License: CC0-1.0

License: CC0-1.0
 To the extent possible under law, the author(s) have dedicated all copyright
 and related and neighboring rights to this software to the public domain
 worldwide. This software is distributed without any warranty.
 .
 The full text of the CC0 1.0 Universal license is available on Debian systems
 in /usr/share/common-licenses/CC0-1.0