Neovim for Beginners —LSP using null-ls.nvim
Improve the built-in LSP using null-ls.nvim.

We configured the built-in Neovim LSP in the previous articles. However, depending on the language servers' implementation, some LSP features may not be available.
E.g. if we are using Pyright as the Python language server, the code formatting feature is not supported. Even if the feature…