chore: add live reload features

src/main.rs

@@ -1,9 +1,14 @@
+use axum::response::Html;
 use axum::routing::get;
 use axum::Router;
 
 #[tokio::main]
 async fn main() {
-    let app = Router::new().route("/", get(|| async { "Hello, World!" }));
+    let app = Router::new().route("/", get(|| async { Html("<h1>Hello, World! 2</h1>") }));
+
+    // Add hot reload only on dev mode
+    #[cfg(debug_assertions)]
+    let app = app.layer(tower_livereload::LiveReloadLayer::new());
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
     axum::serve(listener, app).await.unwrap();