make effect system async to make signals send + sync

packages/signals/src/lib.rs

@@ -2,6 +2,7 @@
 #![doc(html_logo_url = "https://avatars.githubusercontent.com/u/79236386")]
 #![doc(html_favicon_url = "https://avatars.githubusercontent.com/u/79236386")]
 #![warn(missing_docs)]
+#![allow(clippy::type_complexity)]
 
 mod rt;
 pub use rt::*;