misc/fortune-mod-mormon: New port

This port provides the scriptures of the Church of Jesus Christ of
Latter Day Saints broken down into 15 fortune(6) modules. It conflicts
with fortune-mod-bible, which provides a slightly different KJV Bible,
and fortune-mod-psalms, which provides the psalms from the Douai Bible.
Note that these other fortune modules have logic to select a strfile
implementation from the days when there were multiple; this is no longer
the case.

Thanks: cperciva, kevans
Approved by: arrowd (ports)
Differential Revision: https://reviews.freebsd.org/D52350