more fullstack cleanups: loaders serialize, ServeConfig only (#4785)

* some opinionated cleanups in dioxus-server

* add serialize to loader

* add `result` to Resource

* clippy

* fix

* writable memos, resources, `onmount`, `.pending`, and `.value()` on actions

* fix compile issues

* fix typo

packages/fullstack-server/src/lib.rs

@@ -11,9 +11,8 @@ pub use bytes::Bytes;
 pub use dioxus_fullstack_core::{ServerFnError, ServerFnResult};
 
 pub use axum;
-pub(crate) use config::*;
+pub use config::ServeConfig;
 pub use config::*;
-pub use config::{ServeConfig, ServeConfigBuilder};
 pub use document::ServerDocument;
 pub use http;
 pub use inventory;
@@ -46,3 +45,6 @@ pub use serverfn::*;
 
 pub mod isrg;
 pub use isrg::*;
+
+mod index_html;
+pub(crate) use index_html::IndexHtml;