feat: add recycling of rts in signals

examples/signals.rs

@@ -1,7 +1,3 @@
-//! Example: README.md showcase
-//!
-//! The example from the README.md.
-
 use dioxus::prelude::*;
 use dioxus_signals::{use_init_signal_rt, use_signal};
 use std::time::Duration;
@@ -15,7 +11,7 @@ fn app(cx: Scope) -> Element {
 
     let mut count = use_signal(cx, || 0);
 
-    use_coroutine(cx, |_: UnboundedReceiver<()>| async move {
+    use_future!(cx, || async move {
         loop {
             count += 1;
             tokio::time::sleep(Duration::from_millis(100)).await;