switch to a Document trait and introduce Script/Head/Style/Meta components (#2635)

* switch to a Document trait and introduce Script/Head/Style/Meta components

* Fix desktop title

* Insert special elements into the head during the inital SSR render

* Make all head component attributes optional

* hydrate head elements

* improve the server streaming head warning

* Document fullstack head hydration approach

* deduplicate head elements by href

* move Link into head::Link

* document head components

* add meta and title examples

* Fix a few doc examples

* fix formatting

* Add title to playwright tests

* serde is optional on web, but it is enabled by hydrate

* remove leftover console log

packages/core/src/virtual_dom.rs

@@ -918,7 +918,6 @@ impl VirtualDom {
                 "Calling {} listeners",
                 listeners.len()
             );
-            tracing::info!("Listeners: {:?}", listeners);
             for listener in listeners.into_iter().rev() {
                 if let AttributeValue::Listener(listener) = listener {
                     self.runtime.rendering.set(false);