Add Closure linter to arcanist

Summary:
Found https://secure.phabricator.com/D4519 but it was horribly out of date, so decided to write a new version.
Kinda clobbered together form that diff and the new version of ArcanistJSHintLinter

Test Plan: Tested on personal projects with js files.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9131