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/playwright-tests/fullstack/src/main.rs

@@ -17,7 +17,7 @@ fn app() -> Element {
 
     rsx! {
         h1 { "hello axum! {count}" }
-        Title { "hello axum! {count}" }
+        document::Title { "hello axum! {count}" }
         button { class: "increment-button", onclick: move |_| count += 1, "Increment" }
         button {
             class: "server-button",