[WIP]Add ntp client

[bastelfreak]

Approach to implement #30

[bastelfreak]

any opinions on this?

[bastelfreak]

shellcheck is a bit anoying because it also checks broken upstream code.

[bastelfreak]

good code is gooood:

:: waiting for 2 processes to finish repacking repos...
Failed to create bus connection: No such file or directory
umount: work/i686/airootfs/etc/resolv.conf: mountpoint not found

this is maybe not related to this change but still breaks the build.

[bastelfreak]

technology \o/

so obviously timedatectl won't work because it is running in a chroot.