Adding new language/locale to system via a graphical interface

[Pirate Praveen]

Hi,

I'm looking for a way to add a new locale/language to system from gnome 
(think about gnome on mobile like Purism Librem 5 or Pine Phone). I can 
do that from a terminal by running dpkg-reconfigure locales but want to 
provide an easier option to users. Is there a way to force gtk 
interface of debconf and launch it from graphical interface? In Ubuntu, 
there is separate add language tool which can add new languages.

Thanks
Praveen