Is your feature request related to a problem? Please describe.
Not all users know English, as supporting more languages will make it easier for non-English-speaking users to use the app.

Describe the solution you'd like
Add support to the community to add localization (l10n).

Describe alternatives you've considered

Additional context
Maybe you already support internationalization (i18n), but then it would be nice to describe in the README or CONTRIBUTING exactly how the user can add a new localization or fix an existing one. Also, you probably need a language picker in the options.