[NEW] net/py3-pysocks: Create Python 3.x port of net/py-pysocks
The latest www/py-requests update [1] unbundled its dependencies, now
requiring chardet, idna, urllib3 and certifi from ports.
www/py3-requests port was not tested during QA, which would have highlighted
the need for many new py3-* ports (and their dependencies).
This change creates one of those ports.
[1] https://svnweb.freebsd.org/changeset/ports/442565
PR: 219833
Approved by: koobs (python, with hat)