Option to add UI control to change languages

[planemad]

A UI control to switch the language on the frontend would be very useful for a user to override the default map setting and for use in debugging translations.

Example: https://www.mapbox.com/mapbox-gl-js/example/language-switch/

[lukasmartinelli]

Yes I agree. one would specify that in the options of the plugin

map.addControl(new MapboxBrowserLanguage({
  showLanguageSwitch: true
}));