Added web api code

src/main.rs

@@ -1,3 +1,39 @@
-fn main() {
-    println!("Hello, world!");
+use axum::{
+    Json, Router,
+    http::StatusCode,
+    routing::{get, post},
+};
+use serde::{Deserialize, Serialize};
+
+#[tokio::main]
+async fn main() {
+    // initialize tracing
+    tracing_subscriber::fmt::init();
+
+    // build our application with a route
+    let app = Router::new()
+        // `GET /` goes to `root`
+        .route("/", get(root));
+    // `POST /users` goes to `create_user`
+    // .route("/users", post(create_user));
+
+    // run our app with hyper, listening globally on port 3000
+    let listener = tokio::net::TcpListener::bind(get_full()).await.unwrap();
+    axum::serve(listener, app).await.unwrap();
+}
+
+fn get_full() -> String {
+    get_address() + ":" + &get_port()
+}
+fn get_address() -> String {
+    String::from("0.0.0.0")
+}
+
+fn get_port() -> String {
+    String::from("3000")
+}
+
+// basic handler that responds with a static string
+async fn root() -> &'static str {
+    "Hello, World!"
 }