Feature suggestion : Leaderboard per language

[Dryhb]

If you have seen the number of messages per language, you can see that english gets almost all the messages and other languages languages get less than 10% of it. Big contributors in some language are not well "rewarded" on the leaderboard compared to their effort. Maybe a general leaderboard and a filter by language would be nice (a simple filter probably). This could encourage people on other languages maybe as a leaderboard place is a good motivation and "more easily reachable" on a smaller language than english. Info about message numbers : https://github.com/LAION-AI/Open-Assistant/issues/1257 Kinda related to a stats menu as the stats would have a language sort too : https://github.com/LAION-AI/Open-Assistant/issues/1190