New port: sysutils/sbase: Collection of UNIX tools that are portable across UNIX-like systems

Another project from the suckless team: https://core.suckless.org/sbase

PR: 225410
Submitted by: Piotr Kubaj <pkubaj@anongoth.pl>
Approved by: tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D14096