Add Zenodo repos/citation fields/files

[jsstevenson]

Feature description

• Zenodo can be integrated with GitHub so that software can be cited by itself, i.e. not simply as part of a journal article. Once set up, I believe it continues this automatically for each new release.
• Many of our repos could include specific citation language in the docs and/or readme. Probably not all of them, but more than we have now.
• You can also add this information to a citation.cff file

Use case

We often need to cite our repos, and it's tiresome to re-do the Zenodo steps every time. It'd be good for us to employ it as standard practice.

Acceptance Criteria

• Zenodo integration working + confirmed with new release
• Citation-worthiness evaluation completed for all repos to determine whether they should have specific citation language in readme/docs
• citation.cff file added to all repos
• DOI badges where relevant

Proposed solution

No response

Alternatives considered

No response

Implementation details

No response

Potential Impact

No response

Additional context

No response

Contribution

Yes, I can create a PR for this feature.

[korikuzma]

We should also include DOI badges