The release version should really track the release, but has been
neglected. Also fix the rpm comment that these are the templates for
RHEL9 not 8.
Related: RHEL-69011
...turns out you can't just have a single template file, because lorax
just picks a single directory and expects all the data it needs to be
there. Sigh.
So this adds all the rest of the files, plus some Makefile machinery for
generating a tarball and updating the specfile after you've checked in
changes. See README for details.