feat: async components!

packages/core/src/properties.rs

@@ -165,6 +165,6 @@ impl EmptyBuilder {
 
 /// This utility function launches the builder method so rsx! and html! macros can use the typed-builder pattern
 /// to initialize a component's props.
-pub fn fc_to_builder<'a, T: Properties + 'a>(_: fn(Scope<'a, T>) -> Element) -> T::Builder {
+pub fn fc_to_builder<'a, A, T: Properties + 'a>(_: fn(Scope<'a, T>) -> A) -> T::Builder {
     T::builder()
 }