codify "platform" into resolution logic, server-fn/fullstack overhaul (#4596)

overhaul dioxus fullstack using a new implementation of server_fn

This PR is a complete rewrite of dioxus fullstack designed to improve compatibility with axum and to fix a number of compilation errors based on feature flag unification plumbing through macros.

packages/document/src/elements/stylesheet.rs

@@ -1,7 +1,7 @@
 use super::*;
 
 /// Render a [`<link>`](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/link) tag into the head of the page with the stylesheet rel.
-/// This is equivalent to the [`Link`](crate::Link) component with a slightly more ergonomic API.
+/// This is equivalent to the [`Link`](Link) component with a slightly more ergonomic API.
 ///
 ///
 /// # Example