* Allow to specify a custom username in "pmbootstrap init"
* Build chroots have "pmos" instead of "user" as username now
* Installation user UID is 1000 now (as in all other Linux distributions)
* Adjust autologins
* postmarketos-base: enable wheel group for sudo, removed previous sudoers file
* Implement safe upgrade path:
We save the version of the work folder format now, in $WORK/version.
When this file does not exist, it defaults to 0.
In case it does not match the currently required version
(pmb.config.work_version), then ask the user if it should
automatically be upgraded.
This commit disables root autologin for postmarketos-base and enabled
root autologin for postmarketos-ui-weston (since weston-launcher is not
built, weston can only be run by root).
Per the APKBUILD reference, , package *-install scripts should be checksummed to guard against incomplete/corrupt downloads. The postmarketos-base package is one example where this is not being implemented currently.