Summary:
Ref T10939. Ref T8887. This moves toward letting packages automatically become reviewers or blocking reviewers of owned code.
This change adds an "Auto Review" option to packages. Because adding reviewers/blocking reviewers is a little tricky, it doesn't actually have these options yet -- just a "subscribe" option. I'll do the reviewer work in the next update.
Test Plan:
Created a revision in a package with "Auto Review: Subscribe to Changes". The package got subscribed.
{F1311677}
{F1311678}
{F1311679}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8887, T10939
Differential Revision: https://secure.phabricator.com/D15915
