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/fullstack/src/document/web.rs

@@ -1,7 +1,7 @@
 #![allow(unused)]
 //! On the client, we use the [`WebDocument`] implementation to render the head for any elements that were not rendered on the server.
 
-use dioxus_lib::events::Document;
+use dioxus_lib::document::*;
 use dioxus_web::WebDocument;
 
 fn head_element_written_on_server() -> bool {
@@ -15,11 +15,8 @@ fn head_element_written_on_server() -> bool {
 pub struct FullstackWebDocument;
 
 impl Document for FullstackWebDocument {
-    fn new_evaluator(
-        &self,
-        js: String,
-    ) -> generational_box::GenerationalBox<Box<dyn dioxus_lib::prelude::document::Evaluator>> {
-        WebDocument.new_evaluator(js)
+    fn eval(&self, js: String) -> Eval {
+        WebDocument.eval(js)
     }
 
     fn set_title(&self, title: String) {
@@ -29,35 +26,31 @@ impl Document for FullstackWebDocument {
         WebDocument.set_title(title);
     }
 
-    fn create_meta(&self, props: dioxus_lib::prelude::MetaProps) {
+    fn create_meta(&self, props: MetaProps) {
         if head_element_written_on_server() {
             return;
         }
         WebDocument.create_meta(props);
     }
 
-    fn create_script(&self, props: dioxus_lib::prelude::ScriptProps) {
+    fn create_script(&self, props: ScriptProps) {
         if head_element_written_on_server() {
             return;
         }
         WebDocument.create_script(props);
     }
 
-    fn create_style(&self, props: dioxus_lib::prelude::StyleProps) {
+    fn create_style(&self, props: StyleProps) {
         if head_element_written_on_server() {
             return;
         }
         WebDocument.create_style(props);
     }
 
-    fn create_link(&self, props: dioxus_lib::prelude::head::LinkProps) {
+    fn create_link(&self, props: LinkProps) {
         if head_element_written_on_server() {
             return;
         }
         WebDocument.create_link(props);
     }
-
-    fn as_any(&self) -> &dyn std::any::Any {
-        self
-    }
 }