Updated to latest updates for nixpkgs and home-manager as of 6-29-23.
Also cleaned up the directory structure and moved some redundant data
to locations that make a lot more sense. E.g. we moved the hostname
definitions into the hardware configurations as there is other
networking configuration done there. I feel this is a much more
logical place to stick it. Also got rid of update directory as we
are now using flakes and not channels, so our updates are limited to
what our flake.lock is set to.
