enable systemd-networkd per preset in fedora 37+

enable systemd-networkd per preset in fedora 37+

While the template has systemd-networkd enabled, the lack of
/etc/machine-id causes systemd to revert to its "preset",
where now in
  /usr/lib/systemd/system-preset/90-default.preset
fedora disables systemd-networkd in favor of NetworkManager.

Without this patch, the first boot of a fresh fedora 37
container would disable networking requiring a
`systemctl enable systemd-networkd` from within the
container once, after which it sticks around (until
/etc/machine-id is deleted).

This patch provides an
`/etc/systemd/system-preset/00-pve.preset` file to keep
systemd-networkd enabled via the `template_fixup` hook.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>