Copyright for lexd source package in Mantic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Source: https://apertium.org/

Files: *
Copyright: 2019-2021, Daniel Swanson 
                2020, Nick Howell 
           See AUTHORS for more copyrights.
License: GPL-3+

Files: debian/*
Copyright: 2021-2022, Apertium Project Management Committee 
License: GPL-3+

License: GPL-3+
 This program is free software: you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation, either version 3 of the License, or (at your option) any later
 version.
 .
 This package is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 details.
 .
 You should have received a copy of the GNU General Public License along with
 this program. If not, see .
 .
 On Debian systems, the complete text of the GNU General Public License version
 3 can be found in "/usr/share/common-licenses/GPL-3".