⬇️ (tailwind) downgrade tailwind to v3

downgrading tailwind because heroUI beta that support tailwind v4 encounter error that makes full reload pages when use
link from HeroUI, will be updated to v4 when it's fixed.

tailwind.config.js

@@ -0,0 +1,19 @@
+import { heroui } from "@heroui/react";
+
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    "./app/**/*.{js,ts,jsx,tsx,mdx}",
+    "./providers/**/*.{js,ts,jsx,tsx,mdx}",
+    "./features/**/*.{js,ts,jsx,tsx,mdx}",
+    "./shared/**/*.{js,ts,jsx,tsx,mdx}",
+    "./widgets/**/*.{js,ts,jsx,tsx,mdx}",
+
+    "./node_modules/@heroui/theme/dist/**/*.{js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {},
+  },
+  darkMode: "class",
+  plugins: [heroui()],
+};