[NEW PORTS] sysutils/py-upt{-pypi,-freebsd}: Universal Packaging Tool

A unified CLI tool that converts a package from a language-specific package
manager (such as PyPI or NPM) to an almost ready-to-use package for Free
Unix-based operating systems (such as a GNU/Linux distribution or *BSD).

This commit includes the PyPI frontend and FreeBSD (Ports) backend packages
as sysutils/py-upt-pypi and sysutils/py-upt-freebsd, respectively.

WWW: https://framagit.org/upt/upt

PR: 242241
Submitted by: Cyril Roelandt <cyril.roelandt aquilenet fr>