Merge branch 'debianpkg' into 'librem5'

Add Debian packaging

Closes #20 and image-builder#3

See merge request !34
1 job for librem5 in 2 minutes and 54 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #282468
librem5
build:cross:debian-buster

00:02:54