Localization/Internationalization support?

[ABaumher]

Is there any native support in the plugin architecture that tells us which language the user prefers? I couldn't find anything in the documentation, but maybe you guys here have seen something. Since the Steam Plugin provides the NextStep calls with custom html, we have to provide the translations ourselves. We have obtained an early French translation, and I am looking to include it.

If worst comes to worst, i could just put a Language Select dropdown in the top corner with the international codes (i.e. en-US, en-GB, fr-FR, de-DE, etc), and push that information to the persistent cache. Alternatively, i could probably do some js stuff to determine the most likely language based on rough location, but either way i'd prefer to use the language GOG is using.

Edit: I did find an open issue, which was commented on by a contributor here. gogcom/galaxy-integrations-python-api#11
it mentions an Accept-Language header, but i have no clue what that means, frankly. Assuming something POST request related, which unfortunately wouldn't help me.