This is a Go program inside the sources of `postgresql_anonymizer` that
allows to perform database dumps, but with anonymized data. I figured
that it's a little awkward to have a client program to be part of the
extension package.
So I decided to create a second package called `pg-dump-anon`. Since
it's one repository, both share `version` & `src`.
Also extended the VM test to make sure we're getting properly anonymized
data when dumping with `pg_dump_anon`.
