metadata for translations

[maelle]

Fix #917

@yabellini I still have questions about the Zenodo entry.

• How did we create the Zenodo entry for the Spanish translation? In particular, where did we store the ORCID IDs of the translators?
• Related, how should we create the Zenodo entry for the Portuguese translation? How do we get a Zenodo URL before the first release 🤪

[yabellini]

@maelle I will check in Zenodo. I don't remember how we did this. This means that we have to document the steps for other books and other languages in the future.

[maelle]

PDF, derived work

[maelle]

document in editors guide