Move lsp config to local file structure

.config/nvim/lsp/futhark_lsp.lua

@@ -0,0 +1,17 @@
+---@brief
+---
+--- https://github.com/diku-dk/futhark
+---
+--- Futhark Language Server
+---
+--- This language server comes with the futhark compiler and is run with the command
+--- ```
+--- futhark lsp
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'futhark', 'lsp' },
+  filetypes = { 'futhark', 'fut' },
+  root_markers = { '.git' },
+}