Add support for contributors or contributor types other than author

[mauromsl]

Is your feature request related to a problem? Please describe.
Janeway doesn't capture any metadata regarding contributors (other than authors) at the article level.

Describe the solution you'd like
An interface and related database tables for storing contributors. At a minimum, it should store the same fields as the FrozenAuthor model (perhaps an abstraction of this model would work) but should also store the contributor type, as an internal code as well as a verbose name (perhaps within a predetermined list of choices)

Additional context
This has become relevant during migration from other platforms where this data is present and is lost in the transition to Janeway (e.g. migration of <contributor> from JATS XML)

[kmccurley]

A lot of people have been asking crossref to add support for contributor types based on CRedIT, and they are in the process of coming up with an extension of these roles.

[StephDriver]

Backlog refinement: This needs design, which should also take into account

• Add support for CRediT (Contributor Roles Taxonomy) in Janeway #3037
• Reviewer credit #3264

It is hoped that the design changes would resolve all three together.