feat: add frontend setup with Tailwind CSS

tailwind.config.js

@@ -0,0 +1,12 @@
+module.exports = {
+    content: ['./public/**/*.{html,js}'],
+    theme: {
+        extend: {
+            colors: {
+                primary: '#2563eb',
+                'primary-hover': '#1d4ed8',
+            },
+        },
+    },
+    plugins: [],
+}