Add dns/dnscrypt-proxy2: Flexible DNS proxy with support for encrypted protocols
A flexible DNS proxy, with support for modern encrypted DNS protocols such as
DNSCrypt v2 and DNS-over-HTTP/2.
WWW: https://github.com/jedisct1/dnscrypt-proxy
Without a repocopy because it's a new port, rewritten from scratch.
PR: 225821
Submitted by: VinÃcius Zavam <egypcio@googlemail.com>
Differential Revision: https://reviews.freebsd.org/D14319