Language informations

Add a zshrc language support, current syntax highlighting is good , but it's not beautiful , I'd rather keywords be red ....

The below ruby code:

foo = 123

Gives foo a face of tree-sitter-hl-face:function.method which isn't correct (it should be variable or similar). I poked around a bit and my guess would be the ((identifier) @function.method (#is-not? local)) highlight rule is matching too much suggesting the locals stuff isn't working (?).

I'm guessing it is an issue here vs tree-sitter-r

Well, the title of the issue tells it all, but just to clarify, we may need a better documentation (something in the read the docs or something like that, or a github page)

It is going to be a tricky work and a very necessary one.

Welcome to Hacktoberfest

..and welcome to our community! So many fun things to get into this Hacktoberfest like [adding translations for your native written language 🌏 ](https://githu