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/desktop/Cargo.toml

@@ -12,7 +12,7 @@ rust-version = "1.76.0"
 
 [dependencies]
 dioxus-core = { workspace = true, features = ["serialize"] }
-dioxus-html = { workspace = true, features = ["serialize", "mounted", "file_engine"] }
+dioxus-html = { workspace = true, features = ["serialize"] }
 dioxus-document = { workspace = true }
 dioxus-signals = { workspace = true, optional = true }
 dioxus-interpreter-js = { workspace = true, features = ["binary-protocol", "serialize"] }
@@ -50,6 +50,7 @@ base64 = { workspace = true }
 libc = "0.2.174"
 rand = { workspace = true, features = ["std_rng"] }
 subtle = { version = "2.6", features = ["const-generics"] }
+bytes = { workspace = true }
 webbrowser = { workspace = true }
 
 [target.'cfg(unix)'.dependencies]