I appreciate the passion for making the game multilingual…but sadly, as others have noted, nothing about CoG/HG or ChoiceScript is set up to make that easy. The company’s one experiment in making a game available in a language other than English was a total commercial failure, and that dropped everything to do with translation to the bottom of the corporate priorty list.
Incorporating a machine translation tool into CoG’s app, so that the English screen output could be automatically translated into other languages, would be an interesting possibility – but it would probably involve costly licensing of someone else’s translation software, an investment I doubt the company is about to prioritize any time soon.
Without that, trying to make a game available in multiple languages will be a resource-intensive project that (I’m afraid) next to nothing about the current CS ecosystem will facilitate.