Add async usage example

Author: szymon-zadworny

oneapi-rs/examples/async.rs

@@ -0,0 +1,31 @@
+//
+// Copyright (C) 2026 Intel Corporation
+//
+// Under the MIT License or the Apache License v2.0.
+// See LICENSE-MIT and LICENSE-APACHE for license information.
+// SPDX-License-Identifier: MIT OR Apache-2.0
+//
+
+use oneapi_rs::queue::Queue;
+
+#[tokio::main]
+async fn main() {
+    let mut queue = Queue::new();
+    let mut buffer = queue.alloc_shared::<u32>(10).await;
+
+    for e in buffer.iter() { 
+        print!("{e} ")
+    }
+
+    println!();
+
+    for i in 0..buffer.len() {
+        buffer[i] = i as u32;
+    }
+
+    for e in buffer.iter() { 
+        print!("{e} ")
+    }
+
+    println!();
+}