docs: Docathon

[HCookie]

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📚 Documentation preview 📚: https://anemoi-inference--183.org.readthedocs.build/en/183/

[FussyDuck]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
3 out of 4 committers have signed the CLA.

✅ b8raoult
✅ HCookie
✅ anaprietonem
❌ aaron-hopkinson
_{You have signed the CLA already but the status is still pending? Let us recheck it.}