build: move the Tailwind config to the source directory

src/styles/tailwind.config.js

@@ -0,0 +1,9 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+    mode: "all",
+    content: ["./src/**/*.{rs,html,css}", "./dist/**/*.html"],
+    theme: {
+        extend: {},
+    },
+    plugins: [],
+};