feat: mapping between swerik_ids and biobook references

[BobBorges]

Here's a mapping between swerik IDs and the bio-books.

I found 172 individuals in the mp metadata that didn't make it into the known_mp_catalog, thus not in the mapping. 147 of them have a biobook reference that we know of, but the volume / pages would have to be looked up or fetched from wikidata - is that something we want to handle before merging this file? I need to use it for other stuff, but it can sit in PR for a while.

• unreferenced MPs with a biobook reference unreferenced-mps.csv

• the list of IDs not in the mapping file unreferenced-MPs.txt

[fredrik1984]

Ok, good to know! I leave that decision to @MansMeg or @ninpnin

[BobBorges]

@ninpnin Pls take a look /merge

[MansMeg]

Should we open up a new issue to fix the last things?

[ninpnin]

I think we should add a description in corpus/metadata/README.md . Otherwise looks fine by me.