Add warp & tokio

Cargo.toml

@@ -5,3 +5,5 @@ edition = "2021"
 authors = ["charlotte ✨ <charlotte@lavender.software>"]
 
 [dependencies]
+tokio = { version = "1.15.0", features = ["full"] }
+warp = "0.3.2"

src/main.rs

@@ -1,3 +1,7 @@
-fn main() {
-    println!("Hello, world!");
+use warp::Filter;
+
+#[tokio::main]
+async fn main() {
+    let hello = warp::any().map(|| "Hello!".to_string());
+    warp::serve(hello).bind(([127, 0, 0, 1], 8000)).await;
 }