main/utmps: upgrade to 0.1.2.0
Also add a btmpd service, and separate preparation from initialization; reflect that in the setup-utmp program.
We are currently working on getting Alpine Linux 3.21 out. This means that merge requests that are not aimed to help with that (only affecting testing, new aports) have a lower priority at the moment. Please be patient, they will be eventually picked up.
Also add a btmpd service, and separate preparation from initialization; reflect that in the setup-utmp program.