Build AlmanacInterface

Summary: Ref T5833. An interface is an IP (maybe v4, maybe v6) and port on a specified network (public internet, VPN, NAT block, etc).

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5833

Differential Revision: https://secure.phabricator.com/D10718