I'll add your sh3l file to the Other translations supported by Sweet Home 3D section first.
If I see it's really successful and if you provide the translation of help pages and a few web pages, then I'll probably add it to Sweet Home 3D itself to make it available directly at program installation, without the requirement to download any sh3l file. But in that case, I hope you'll be able to provide translation updates when a new version contains new words.