Rough in Guides Application

Summary: Ref T11132, Ref T11478. Builds out a basic PHUICMSView and Guides Application, no content / modules.

Test Plan: Go to /guides/, see blank states for new guides.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T11132, T11478

Differential Revision: https://secure.phabricator.com/D16414