Move lsp config to local file structure

.config/nvim/lsp/cssmodules_ls.lua

@@ -0,0 +1,17 @@
+---@brief
+---
+--- https://github.com/antonk52/cssmodules-language-server
+---
+--- Language server for autocompletion and go-to-definition functionality for CSS modules.
+---
+--- You can install cssmodules-language-server via npm:
+--- ```sh
+--- npm install -g cssmodules-language-server
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'cssmodules-language-server' },
+  filetypes = { 'javascript', 'javascriptreact', 'typescript', 'typescriptreact' },
+  root_markers = { 'package.json' },
+}