Copyright for rust-to-method source package in Noble

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: to_method
Upstream-Contact: muvlon 
Source: https://github.com/whentze/to_method

Files: *
Copyright: 2021 muvlon 
License: CC0-1.0

Files: debian/*
Copyright:
 2023 Debian Rust Maintainers 
 2023 Alexander Kjäll 
License: CC0-1.0

License: CC0-1.0
 Debian systems provide the CC0 1.0 Universal License in
 /usr/share/common-licenses/CC0-1.0