This repo needs a CONTRIBUTING.md

[ross-spencer]

Description of problem

Folks arriving here might not know how to engage.

Primarily, it's just a list of issues that look like any other list of issues in GitHub, and folks can log whatever about anything Wikidata and digital preservation related (leaning more towards signature development) but there's not a lot of context.

There also needs to be more information about:

• motivation - safe space for digital preservationists while we learn about Wikidata
• providing a mezzanine to coordinate a digital preservation response, whether Wikidata-first or Wikidata-second.
• that this issues page is not meant to be the be all and end all - there does need to be a migration, either to Wikidata literacy, or something else, e.g. via WikiDP proper.
• in lieu of anything else this is what we were able to do in the Siegfried/Wikidata project to start having conversations.

Anyway, lets improve the open source health of this site, and help sign-post it better.