new port: net/py-wsdd, web service discovery host daemon

wsdd implements a Web Service Discovery host daemon. This enables (Samba)
hosts, like your local NAS device, to be found by Web Service Discovery
Clients like Windows.

WWW: https://github.com/christgau/wsdd

PR: 246042
Submitted by: Hiroo Ono <hiroo.ono+freebsd@gmail.com> (maintainer)