Automate translation file generation
- generate a set of pot files, as downloadable artifacts.
- have an up-to-date set of po files from CI as downloadable artifacts
This would work the same way it works for Inkscape itself.
hen we don't need to update the po files in the repo for each and every chapter that is edited in English, as that will blow up the repository size unnecessarily and hide the actual last edit date of po files from view.