Move lsp config to local file structure

.config/nvim/lsp/unocss.lua

@@ -0,0 +1,41 @@
+---@brief
+---
+--- https://github.com/xna00/unocss-language-server
+---
+--- UnoCSS Language Server can be installed via npm:
+--- ```sh
+--- npm i unocss-language-server -g
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'unocss-language-server', '--stdio' },
+  -- copied from https://github.com/unocss/unocss/blob/35297359bf61917bda499db86e3728a7ebd05d6c/packages/vscode/src/autocomplete.ts#L12-L35
+  filetypes = {
+    'erb',
+    'haml',
+    'hbs',
+    'html',
+    'css',
+    'postcss',
+    'javascript',
+    'javascriptreact',
+    'markdown',
+    'ejs',
+    'php',
+    'svelte',
+    'typescript',
+    'typescriptreact',
+    'vue-html',
+    'vue',
+    'sass',
+    'scss',
+    'less',
+    'stylus',
+    'astro',
+    'rescript',
+    'rust',
+  },
+  workspace_required = true,
+  root_markers = { 'unocss.config.js', 'unocss.config.ts', 'uno.config.js', 'uno.config.ts' },
+}