sysutils/bsdebfetch: + Simple system info tool in bash

Summary:
BSDebfetch is a simple yet beautiful system information tool for FreeBSD
based on Debfetch, written in GNU Bash.

WWW: https://git.sr.ht/~shiorid/bsdebfetch

Test Plan: Both poudriere testport and portlint -A doesn't complain.

Reviewed by: arrowd

Differential Revision: https://reviews.freebsd.org/D34337