bin/57900: Import monitor tool from DragonflyBSD

[rbranco%suse.de@localhost]

>Number:         57900
>Category:       bin
>Synopsis:       Import monitor tool from DragonflyBSD
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 02 22:25:00 +0000 2024
>Originator:     Ricardo Branco
>Release:        NetBSD 10.0_RC3
>Organization:
>Environment:
>Description:
Import monitor tool from DragonflyBSD:
https://leaf.dragonflybsd.org/cgi/web-man?command=monitor&section=ANY
>How-To-Repeat:

>Fix:
https://github.com/NetBSD/src/pull/30