Move lsp config to local file structure

.config/nvim/lsp/hls.lua

@@ -0,0 +1,31 @@
+---@brief
+---
+--- https://github.com/haskell/haskell-language-server
+---
+--- Haskell Language Server
+---
+--- If you are using HLS 1.9.0.0, enable the language server to launch on Cabal files as well:
+---
+--- ```lua
+--- vim.lsp.config('hls', {
+---   filetypes = { 'haskell', 'lhaskell', 'cabal' },
+--- })
+--- ```
+
+local util = require 'lspconfig.util'
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'haskell-language-server-wrapper', '--lsp' },
+  filetypes = { 'haskell', 'lhaskell' },
+  root_dir = function(bufnr, on_dir)
+    local fname = vim.api.nvim_buf_get_name(bufnr)
+    on_dir(util.root_pattern('hie.yaml', 'stack.yaml', 'cabal.project', '*.cabal', 'package.yaml')(fname))
+  end,
+  settings = {
+    haskell = {
+      formattingProvider = 'ormolu',
+      cabalFormattingProvider = 'cabal-fmt',
+    },
+  },
+}