feat: add lisp support

[mvllow]

includes fennel, lisp and scheme filetypes

[numToStr]

Does lisp comments starts with one semicolon? Although I have also seen two semicolon like in treesitter queries.

(I am not a lisp guy, so i might be missing something)

[mvllow]

didn't even think of that, i saw ; worked but you're right, ;; is the proper convention when commenting code 😌

[numToStr]

Noice. Also can you check the filetype for treesitter queries? We can also add that if it's different from lisp.

[numToStr]

@mvllow I did a quick read and I think lisp and scheme also supports block comments.

From scheme docs:

Block comments are delimited by #| and |# pairs, and may be nested.

[mvllow]

added block comments to lisp and scheme. fennel doesn't seem to have block comments

[mvllow]

clojure may have the same lisp comments as well, although i haven't tried it – didn't realise how many lisp-based languages there were

[mvllow]

built-in clojure's commentstring is ;. should we override that to match ;;? still seems like ;; is more conventional – although ; works for all of the mentioned lisp languages

[numToStr]

For now I think it's ok. We can add closure in a separate PR or if someone complains about it :)