Add repository check script

Packaging repositories for downstream forks should have a consistent
layout. Check what we did manually before.
4 jobs for repo-check in 2 minutes and 42 seconds (queued for 2 seconds)
latest
Status Name Job ID Coverage
  Build
passed build:native-debian-buster #359233
librem5

00:00:32

 
  Package
passed package-debian-buster #359234
librem5

00:01:00

 
  Test Package
passed autopkgtest-debian-buster-package #359235
librem5

00:01:09

passed lintian-debian-buster-package #359236
librem5

00:00:52