repo init, simplistic salvo hello world

src/main.rs

@@ -0,0 +1,17 @@
+use salvo::prelude::*;
+
+#[handler]
+async fn hello() -> &'static str {
+    "Hello World"
+}
+
+#[tokio::main]
+async fn main() {
+    let port = std::env::var("PORT").unwrap_or_else(|_| "5800".to_string());
+    let addr = format!("127.0.0.1:{}", port);
+    tracing_subscriber::fmt().init();
+
+    let router = Router::new().get(hello);
+    let acceptor = TcpListener::new(addr).bind().await;
+    Server::new(acceptor).serve(router).await;
+}