R1:68de3dae9ab0

Modularize all remaining Phriction Herald fields

Summary: Ref T8726.

Test Plan:
- Created a rule using all the fields.
- Updated documents, saw rule apply, reviewed transcript.
- Migrated stuff.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: eadler, epriestley

Maniphest Tasks: T8726

Differential Revision: https://secure.phabricator.com/D13514