This time, you can bring a hammock. Overhauls Gleba into an archipelagic planet, with expanded planting options for more versatility and a simpler early-game. Boats recommended.
A common thing people will do is create a separate mod with localized strings for one or more other mods; as long as you have a string to go with each localization key, Factorio doesn't care which mod that string comes from. This is one example.
Usually mod authors create a locale directory with nested directories of different localizations.
As a last resort, they create a mechanism for accepting already translated .cfg files.
:)