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/html/src/transit.rs

@@ -37,7 +37,7 @@ impl<'de> Deserialize<'de> for HtmlEvent {
         // in debug mode let's try and be helpful as to why the deserialization failed
         let data = deserialize_raw(&name, &data).map_err(|e| {
             serde::de::Error::custom(format!(
-                "Failed to deserialize event data for event {}:  {:#?}\n'{:#?}'",
+                "Failed to deserialize event data for event {}:  {}\n'{:#?}'",
                 name, e, data,
             ))
         })?;