Hello Polyglots!

Is it possible to add the translation files of a non-repositoryWordPress Localization Repository The WordPress Localization Repository at https://i18n.svn.wordpress.org/ is a Subversion repository where official WordPress translations are maintained. See Working with the Translation Repository for details. premium pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party to the glots?
Thanks for answering (even if this might already be answered in some FAQ that I missed reading… )

Best
Saskia