test: test demo

demo/backend/app.ts

@@ -0,0 +1,24 @@
+import { App } from '@kevisual/router';
+
+const app = new App({
+  io: true,
+});
+
+app
+  .route({
+    path: 'test',
+    key: 'test',
+  })
+  .define(async (ctx) => {
+    ctx.body = 'test';
+  })
+  .addTo(app);
+
+app.listen(4000, () => {
+  console.log('Server is running at http://localhost:4000');
+});
+
+app.io.addListener('subscribe', async ({ data, end, ws }) => {
+  console.log('A user connected', data);
+  ws.send('Hello World');
+});