Add Backend website server.

website/server/app.ts

@@ -0,0 +1,9 @@
+import { createServer } from 'node:http';
+import { handler } from '../build/handler.js';
+
+const port = process.env.PORT || 3000;
+const server = createServer(handler as any);
+
+server.listen(port, () => {
+	console.log(`Bun Server is listening on http://localhost:${port}`);
+});