setup tailwind + lint and format from root

packages/docs/tailwind.config.js

@@ -0,0 +1,8 @@
+// eslint-disable-next-line unicorn/prefer-module
+module.exports = {
+  content: ["./app/**/*.{ts,tsx}"],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}