go 1.18 embeds vcs info into binaries by default [1] allowing us to provide a
rudimentary version cmd in just a few lines. (version) vcs tags are not
embedded for now - just the commit hash should be good enough for now though.
[1] https://tip.golang.org/doc/go1.18
Instead of the bare bones default config we embedded as a string until now we
can use go 1.16 embed to embed the test blorg.org which makes a much better
starting config (if only to see what's possible).
