For LSP configurations, see https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
Sources: https://github.com/vinodnimbalkar/dotfiles/tree/master/.config/nvim https://gist.github.com/benfrain/97f2b91087121b2d4ba0dcc4202d252f
TODO
- Install Swift LSP https://github.com/apple/sourcekit-lsp/blob/main/Editors/README.md
- Figure out null-ls file saving for HTML/JSON