New port: databases/sqliteconvert

[tobik]

Summary

New port: databases/sqliteconvert

Sqliteconvert is a set of tools to convert SQLite3 schema files into
documentation.  It includes sqlite2dot(1), which converts into a
graphviz file; sqlite2html(1), which converts into an HTML5 fragment;
and sqliteconvert(1), which pulls these tools together with some sane
default templates.

WWW: https://kristaps.bsd.lv/sqliteconvert/

Approved by:	??? (mentor)
Differential Revision:	https://reviews.freebsd.org/D????

Test Plan

poudriere testport 11.0/amd64 ok
poudriere testport 10.3/i386 ok
portlin -AC ok