Add Debian package metadata, vendored deps, and CI configuration

4 jobs for master in 2 minutes and 54 seconds
Status Job ID Name Coverage
  Build Pkgsrc
passed #7134
build_pkgsrc:stretch

00:00:16

 
  Build Pkg
passed #7135
amd64
build_pkg:stretch:amd64

00:00:44

passed #7136
arm64
build_pkg:stretch:arm64

00:01:57

 
  Upload Pkg
passed #7137
upload_pkg

00:00:40