configs/: replace archisodevice boot parameter with archisosearchuuid
archisosearchuuid=
first searches for a matching UUID. If that fails,
then it mounts and looks for a /boot/${archisosearchuuid}.uuid
file in
all detected block devices (in whatever order blkid
lists them).
This implements "file system transposition" without relaying on boot loader specific features and does not tie us to GRUB anymore.
Fixes #217 (closed)