Generating DOIs and citations for components of the library

[jodeleeuw]

This issue is meant to serve as a discussion. A recent workshop attendee suggested rethinking how citations are tracked for the library. Instead of relying exclusively on the BRM paper as a canonical citation, DOIs could be assigned to plugins and versions individually. The benefit is that it will be easier for contributors to be recognized through academic citations.

This change would fit in the larger goal of modularizing the codebase (#195, #529). Suggestions on how to do this are welcome.