Add neovim \ none- ls related topics to the repository.

[eshepelyuk]

Hello

Due to changes happening in none-ls codebase

And in this thread

Could you plz add topics to this repo for better discovery on github, e.g. like in new extras repo https://github.com/nvimtools/none-ls-extras.nvim

[davidmh]

Done

[eshepelyuk]

thanks