Add AsyncHandler for wrapping task spawning

src-tauri/src/process/async_handler.rs

@@ -0,0 +1,14 @@
+use std::future::Future;
+use tauri::{async_runtime, async_runtime::JoinHandle};
+
+pub struct AsyncHandler;
+
+impl AsyncHandler {
+    pub fn spawn<F, Fut>(f: F) -> JoinHandle<()>
+    where
+        F: FnOnce() -> Fut + Send + 'static,
+        Fut: Future<Output = ()> + Send + 'static,
+    {
+        async_runtime::spawn(f())
+    }
+}