Copyright for python-hidapi source package in Focal

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: cython-hidapi
Source: https://github.com/trezor/cython-hidapi

Files: *
Copyright: 2010-2014 Gary Bishop , Pavol Rusnak 
License: GPL-3+

Files: hidapi/*
Copyright: 2009 Alan Ott 
License: GPL-3+

Files: debian/*
Copyright: 2014-2015 Richard Ulrich 
License: GPL-3+

License: GPL-3+
 On Debian systems, the full text of the GNU General Public
 License version 3 can be found in the file
 `/usr/share/common-licenses/GPL-3'.