add demo template

src/app.ts

@@ -0,0 +1,8 @@
+import { App } from '@kevisual/router';
+import { useContextKey, useContext } from '@kevisual/use-config/context';
+
+const init = () => {
+  return new App();
+};
+
+export const app = useContextKey('app', init);

src/demo-route.ts

@@ -0,0 +1,16 @@
+import { app } from './app.ts';
+import { useConfig } from '@kevisual/use-config';
+
+app
+  .route({
+    path: 'demo',
+    key: 'demo',
+  })
+  .define(async (ctx) => {
+    ctx.body = '123';
+  })
+  .addTo(app);
+
+const config = useConfig();
+
+console.log('run demo: http://localhost:' + config.port + '/api/router?path=demo&key=demo');

src/index.ts

@@ -0,0 +1,8 @@
+import { app } from './app.ts';
+import { useConfig } from '@kevisual/use-config';
+import './demo-route.ts';
+const config = useConfig();
+
+app.listen(config.port, () => {
+  console.log(`server is running at http://localhost:${config.port}`);
+});