Do the templating stuff with more Quarto instead

[maelle]

In lieu of #34 @cderv mentioned

a generic variable in the template
assigning it with Lua depending on the language
With a config in a YAML header/file

[cderv]

Let me know if you want me to prototype the idea.

Aim of this is to allow configuration of translation terms using a yaml configuration.

[Nenuial]

@cderv I would be interested if you could explain your idea a bit more.
I'd like to see if there is a better approach to this than what @maelle did in #34.