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/liveview/Cargo.toml

@@ -22,7 +22,8 @@ tokio-stream = { version = "0.1.11", features = ["net"] }
 tokio-util = { version = "0.7.4", features = ["rt"] }
 serde = { version = "1.0.151", features = ["derive"] }
 serde_json = "1.0.91"
-dioxus-html = { workspace = true, features = ["serialize", "document", "mounted"] }
+dioxus-html = { workspace = true, features = ["serialize", "mounted"] }
+dioxus-document = { workspace = true }
 rustc-hash = { workspace = true }
 dioxus-core = { workspace = true, features = ["serialize"] }
 dioxus-interpreter-js = { workspace = true, features = ["binary-protocol"] }