Multilingual site.yaml

Any ideas how to do that? Something like:

--- yaml
title:
en: English title
fr: French title

?

Per the multi-language docs the better option is to put your translations into the user/languages/en.yaml and user/languages/fr.yaml:

SITE_TITLE: English Title

then you can simply use the translate filter |t in Twig:

<title>{{ 'SITE_TITLE'|t }}</title>

Thank you very much!