feat: initialize project with Tailwind CSS, TypeScript, and basic layout

- Add globals.css to import Tailwind CSS styles
- Create layout.tsx for the root layout with metadata and font integration
- Implement Header component with title and subtitle
- Set up tsconfig.json for TypeScript configuration

postcss.config.mjs

@@ -0,0 +1,7 @@
+const config = {
+    plugins: {
+        "@tailwindcss/postcss": {},
+    },
+};
+
+export default config;