Use debian machine readable copyright file

[fire]

Describe the proposed feature and how it helps to overcome a problem or limitation

Establishes a standard, machine-readable format for debian/copyright files within Debian packages to facilitate automated checking and reporting of licenses for packages and sets of packages. This specification was originally drafted as DEP-5.

Other information about your context or usecase.

Need to state copyrights.

If known, describe how your proposal will work, with code, pseudo-code, mock-ups, or diagrams

Implement debian-style copyright file.

Anything else

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