chg: Add lsp and ts config for Haskell

laptop/plugin/lsp_config.lua

@@ -21,6 +21,8 @@ lspconfig.lua_ls.setup({
 
 lspconfig.ocamllsp.setup {}
 
+lspconfig.hls.setup {}
+
 -- Set ;k to hover and ;a to show code actions
 vim.api.nvim_create_autocmd("LspAttach", {
     callback = function()

laptop/plugin/treesitter.lua

@@ -3,7 +3,7 @@ local configs = require("nvim-treesitter.configs")
 configs.setup({
     ensure_installed = { "rust", "lua", "vim", "vimdoc", "ocaml",
         "yaml", "dockerfile", "bash", "html", "javascript", "css", "go",
-        "json", "python", "fish" },
+        "json", "python", "fish", "haskell" },
     sync_install = false,
     disable = { "latex" },
     highlight = {