www/py-dj32-django-graphiql-debug-toolbar: Add new port

This package is an extension for Django Debug Toolbar which enables
support for debugging GraphiQL queries in Django Projects.

WWW: https://github.com/flavors/django-graphiql-debug-toolbar

NB: This port is assigned to Django 3.2 and

www/py-django-graphiql-debug-toolbar was used as a template.