anezi/locale-extension

config/packages/anezi_locale_extension.yaml

services:
    anezi_twig.locale_extension:
        class: Anezi\Locale\Twig\Extension\LocaleExtension
        public:    false
        arguments:
            $locales: ['fr', 'en'] # Edit here for your needs.
        tags:
            - { name: twig.extension }