add gubby-0.3.2

Gubby is a small program that continually shows where Procmail has
placed new email. It runs both in commandline and in an ncurses
environment with colors, and will update the overview in real time,
while using very low resources. Users can launch a specified
mailreader by selecting a folder and pressing enter.

PR: 47907
Submitted by: Michael L. Hostbaek <mich@freebsdcluster.org>