Investigate supporting RAiD identifiers for project tracking (RAiD = Research Activity Identifier)

Overview of the Feature Request
Project identifiers and research activity records like RAiD (raid.org) facilitate reporting and discovery of research outputs via their project identifier. This feature request is about providing a dedicated place in the Dataverse metadata and/or a recommendation for where and how to place project identifiers in the current Dataverse metadata.

What kind of user is the feature intended for?
Developers, depositors and researchers/institutions looking for outputs of a specific project

What inspired the request?
We're currently developing support for RAiD identifiers in RSpace and would like to propagate that metadata automatically when researchers export data to repositories.
See also Discussion in Zulip: #community > RAiD Identifiers

What existing behavior do you want changed?

Any brand new behavior do you want to add to Dataverse?

Any open or closed issues related to this feature request?

Are you thinking about creating a pull request for this feature?
potentially, pending available resources

Start with the linked Zulip discussion and Dataverse's metadata model; the issue names no files, tests, or entry points. Determine whether RAiD needs a dedicated metadata location or a documented recommendation, and define how the identifier should propagate with exported metadata.