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.

examples/09-reference/web_component.rs

@@ -0,0 +1,32 @@
+//! Dioxus allows webcomponents to be created with a simple syntax.
+//!
+//! Read more about webcomponents [here](https://developer.mozilla.org/en-US/docs/Web/Web_Components)
+//!
+//! We typically suggest wrapping webcomponents in a strongly typed interface using a component.
+
+use dioxus::prelude::*;
+
+fn main() {
+    dioxus::launch(app);
+}
+
+fn app() -> Element {
+    rsx! {
+        div {
+            h1 { "Web Components" }
+            CoolWebComponent { my_prop: "Hello, world!".to_string() }
+        }
+    }
+}
+
+/// A web-component wrapped with a strongly typed interface using a component
+#[component]
+fn CoolWebComponent(my_prop: String) -> Element {
+    rsx! {
+        // rsx! takes a webcomponent as long as its tag name is separated with dashes
+        web-component {
+            // Since web-components don't have built-in attributes, the attribute names must be passed as a string
+            "my-prop": my_prop,
+        }
+    }
+}