Created upnp crate to port forward local ports

crates/upnp/examples/upnp-forward.rs

@@ -0,0 +1,24 @@
+use librqbit_upnp::UpnpPortForwarder;
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    tracing_subscriber::fmt::init();
+    let args: Vec<String> = std::env::args().collect();
+    if args.len() != 2 {
+        eprintln!("Usage: {} <port>", args[0]);
+        return Ok(());
+    }
+
+    let port: u16 = match args[1].parse() {
+        Ok(p) => p,
+        Err(_) => {
+            eprintln!("Invalid port number: {}", args[1]);
+            return Ok(());
+        }
+    };
+
+    let port_forwarder = UpnpPortForwarder::new(vec![port], None)?;
+
+    port_forwarder.run_forever().await;
+    Ok(())
+}