Move lsp config to local file structure

.config/nvim/lsp/coffeesense.lua

@@ -0,0 +1,16 @@
+---@brief
+---
+--- https://github.com/phil294/coffeesense
+---
+--- CoffeeSense Language Server
+--- `coffeesense-language-server` can be installed via `npm`:
+--- ```sh
+--- npm install -g coffeesense-language-server
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'coffeesense-language-server', '--stdio' },
+  filetypes = { 'coffee' },
+  root_markers = { 'package.json' },
+}