Add language details feature

[alex-bender]

Hello! It's really nice tool, thanks for that! I'd like to suggest one improvement -- add language details bar to hover. I've been thinking about implementing such extension by myself, but looked around instead, and found your repo. I think that at least main language will provide better user experience for your tool. Thanks

---

Updated: Sorry, moving to fast. Didn't notice that there is main language already. So the question now is only about the lang bar. But I assume that answer is no.. Anyway, thanks for the tool and sorry for bothering you.