databases/py-django-pgware: New port

A small, dependency-light toolkit of three independent PostgreSQL
utilities for Django. Each is a context manager (and, where it makes
sense, a decorator) that borrows Django's database connection, performs
a session-scoped action, and reliably undoes it on exit: advisory locks
(sync + async), GUC setting (pg_set/atomic_set), and logging suppression
(hush, for keeping sensitive query parameters out of the logs).

WWW: https://github.com/Xof/django-pgware

Event: Berlin Hackathon 202609