sysutils/ictree: [NEW PORT] Like tree(1) but interactive

[alven]

Summary

ictree is a terminal-based program that takes a list of contents of
directories and displays them in a pager similar to less where you can
fold/unfold

https://nikitaivanovv.github.io/ictree/

Test Plan

For every {amd64, i386} × {14.3, 13.5}:

• Successful poudriere testport
• Successful run-testing

[yuri]

Approved.