Make it easier to provide context to fullstack (#2515)

* pass context providers into server functions

* add an example for FromContext

* clean up DioxusRouterExt

* fix server function context

* fix fullstack desktop example

* fix axum auth example

* fix fullstack context type

* fix context providers path

packages/fullstack/examples/axum-auth/src/main.rs

@@ -49,9 +49,7 @@ fn main() {
                 // build our application with some routes
                 let app = Router::new()
                     // Server side render the application, serve static assets, and register server functions
-                    .serve_dioxus_application(ServeConfig::builder().build(), || {
-                        VirtualDom::new(app)
-                    })
+                    .serve_dioxus_application(ServeConfig::default(), app)
                     .await
                     .layer(
                         axum_session_auth::AuthSessionLayer::<