Copyright for rust-libhandy-sys source package in Jammy

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: libhandy-sys
Upstream-Contact: Julian Sparber 
Source: https://gitlab.gnome.org/World/Rust/libhandy-rs

Files: *
Copyright: 2018-2021 Julian Sparber 
License: LGPL-2.1-only

Files: debian/*
Copyright:
 2021 Debian Rust Maintainers 
 2021 Henry-Nicolas Tourneur 
License: LGPL-2.1-only

License: LGPL-2.1-only
 Debian systems provide the LGPL 2.1 in /usr/share/common-licenses/LGPL-2.1