make effect system async to make signals send + sync

packages/signals/Cargo.toml

@@ -14,6 +14,9 @@ simple_logger = "4.2.0"
 serde = { version = "1", features = ["derive"], optional = true }
 parking_lot = "0.12.1"
 once_cell = "1.18.0"
+rustc-hash.workspace = true
+futures-channel.workspace = true
+futures-util.workspace = true
 
 [dev-dependencies]
 dioxus = { workspace = true }
@@ -22,4 +25,4 @@ tokio = { version = "1", features = ["full"] }
 
 [features]
 default = []
-serialize = ["serde"]
+serialize = ["serde"]