WIP: DOC: Add a BibTeX file with the recommended ITK references

[jhlegarreta]

Add a BibTeX file with the recommended ITK references.

PR Checklist

• No API changes were made (or the changes have been approved)
• No major design changes were made (or the changes have been approved)

[jhlegarreta]

Notes:

• Having the BibTeX files may be useful to import the citations directly.
• Not sure how best we should modify the README file to show the citations, e.g. whether using the BibTeX keys and a link to the document, whether using https://github.com/vkaravir/bib-publication-list as in https://insightsoftwareconsortium.org/citations, would work, etc.

[gdevenyi]

What about https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-citation-files ?

[jhlegarreta]

What about https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-citation-files ?

Interesting @gdevenyi, thanks ! In that case a tool to convert the BibTeX files into CFF should be run prior to adding them, e.g.
https://github.com/citation-file-format/citation-file-format/blob/main/README.md#tools-to-work-with-citationcff-files-wrench

I believe the primary input data should still be BibTeX format. If you wish, you could open an issue to do this: a GHA workflow could be set up to do this, and to write them to the same folders as the BibTeX files, and if something has changed, the action would automatically open a PR ?

Maybe it can be left as a separate/future PR, and to get the CFF files for the first time, we can run it manually, and add the files to this PR.