[Feature Request] Nested Correspondents

Description

There are often situations where there are hierarchical departments of an organization where searching would benefit a parent-child relationship pretty much exactly like the nested tags are implemented (which is fantastic, by the way!).

It would make it much easier to find documents that indeed come from a state or government - but also from a specific department or person within that government.

Example:
• US Government
-- EPA
-- Department of the Treasury
---- U.S. Mint
---- IRS
-- DOJ
---- FBI
-- DOI
---- BLM
-State of Texas
-- DMV
-- DPS
-- Comptroller's Office
---- Corporations
---- Elections
-- Texas Rangers
-- Railroad Commision
---- Railroads
---- Oil & Gas

It seems like it may be easy to just duplicate the functionality as it already exists for nested tags for this.

Thanks for all you do!

Other

_No response_