Versioned docs pages

[eoaksnes]

https://glebbahmutov.com/blog/versioned-doc-pages/

https://github.com/bahmutov/deploy-gh-example/blob/main/.github/workflows/deploy.yml

Blocked:

#12 needs to approved and merged frist

[sebastianvitterso]

@eoaksnes #12 was merged a while ago. Status update?

[jorgenengelsen]

Versioning is not reccomended by Docusaurus:

Most of the time, you don't need versioning as it will just increase your build time, and introduce complexity to your codebase. Versioning is best suited for websites with high-traffic and rapid changes to documentation between versions. If your documentation rarely changes, don't add versioning to your documentation.

https://docusaurus.io/docs/next/versioning

If we still want versioning, we can probably steal the implementation in eCalc