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/interpreter/src/lib.rs

@@ -24,9 +24,6 @@ pub mod unified_bindings;
 #[cfg(feature = "sledgehammer")]
 pub use unified_bindings::*;
 
-#[cfg(feature = "eval")]
-pub mod eval;
-
 // Common bindings for minimal usage.
 #[cfg(all(feature = "minimal_bindings", feature = "webonly"))]
 pub mod minimal_bindings {