feat: make hooks free-functions

examples/reference/task.rs

@@ -30,7 +30,7 @@ pub static Example: FC<()> = |cx| {
 
     // Tasks are 'static, so we need to copy relevant items in
     let (async_count, dir) = (count.for_async(), *direction);
-    let (task, result) = cx.use_task(move || async move {
+    let (task, result) = use_task(cx, move || async move {
         // Count infinitely!
         loop {
             gloo_timers::future::TimeoutFuture::new(250).await;