cuelang.org: add support for translations

[myitcv]

What page were you looking at?

https://cuelang.org/

What version of the site were you looking at?

cue-lang/cuelang.org@7893073

What did you do?

Visited the site

What did you expect?

A version of the site available in different translations.

What did you see instead?

No translations available (yet!)

This is a tracking issue for adding such translations. It will require some work in the preprocessor to support translations alongside English.

A proof of concept is present in the stack above https://cuelang.org/cl/1194120.

The work in this space includes (but is by no means limited to):

• Working out the mechanics of how a "source of truth" for the script steps etc is established.
• Working out if/how to support translations of steps/scripts
• ...