Move the document trait into a separate crate (#3035)

* add a default head method through eval
* remove the old document trait
* implement document for each platform
* pull out document into a dedicated crate to cut down on shared dependencies
---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/hooks/docs/side_effects.md

@@ -16,7 +16,7 @@ fn MyComponent() -> Element {
         let count = count.read();
 
         // You can use the count value to update the DOM manually
-        eval(&format!(
+        document::eval(&format!(
             r#"var c = document.getElementById("dioxus-canvas");
 var ctx = c.getContext("2d");
 ctx.font = "30px Arial";