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