Enhancement: "Draft" publication status option for primary entity types

Nobody has claimed this yet.

**Issue**

AtoM currently offers the ability to assign a publication status to archival descriptions only, rather than all three primary entity types (archival descriptions, authority records, archival institutions).

I have received feedback about adding this functionality for other entity types as well, most notably authority records. Immediately publishing authority records upon creation potentially raises some issues concerning PII or other information not intended to be publicly available. The ability to switch between "Draft" and "Published" will mitigate these and other similar issues when they crop up.

**Existing workaround**

- Authenticated users with sufficient account privileges can adjust Group permissions for "anonymous" (i.e., unauthenticated/public users) to restrict their access to either all authority records or specific authority records on a more granular level
- PROBLEM: Some key information still appears within search and/or browse results for unauthenticated users

**Suggested enhancement**

- Offer publication status options for authority records especially and also for archival institutions

The issue names no files, tests, or entry points. Start by tracing how publication status is implemented for archival descriptions and how authority records and archival institutions appear in search and browse results; done means draft records are excluded from unauthenticated results while authorized users can switch between Draft and Published.

Written by the indexing model from the issue text.