New port: net/py-cloudflare-scrape

A simple Python module to bypass Cloudflare's anti-bot page (also known as "I'm
Under Attack Mode", or IUAM), implemented with Requests.

https://github.com/Anorov/cloudflare-scrape

Approved by: rakuco (mentor, implicit)
Differential Revision: https://reviews.freebsd.org/D10813