Salsa CI can now check if the debian/copyright is up-to-date

[aquilamacedo@riseup.net]

Hi,

A new optional job is now available in Salsa CI: licenserecon.
It checks for mismatches between debian/copyright and the licenses
actually detected in the source.

This hopefully benefits both new packages to decrease chances of getting
rejected in the NEW queue, and existing packages to keep the copyright
information up-to-date with every new upstream version import.

For details, see
https://salsa.debian.org/salsa-ci-team/pipeline#enable-licenserecon-job

Cheers,

Aquila Macedo