Add index for other languages

[m09]

First, thanks a ton for your work Fabrice, I know how hard it is to keep a hobby website running for so long. It's an amazing accomplishment, and very useful to many of us.

On to the question: it could be interesting to provide a ready-to-use index for the RTK translations, provided there is a data source available for the index. I built such an index for the last French version of RTK and it's directly usable with the import keywords page. Is it enough to put this index on the forums of the website or do you think it might make sense to include the index directly with the main English ones?

Or maybe you would prefer to keep the website as English-only as possible?