Create a Static Site Generation platform; Deduplicate hot reloading code (#2226)

* create static site generation helpers in the router crate

* work on integrating static site generation into fullstack

* move ssg into a separate crate

* integrate ssg with the launch builder

* simplify ssg example

* fix static_routes for child routes

* move CLI hot reloading websocket code into dioxus-hot-reload

* fix some unused imports

* use the same hot reloading websocket code for fullstack

* fix fullstack hot reloading

* move cli hot reloading logic into the hot reload crate

* ssg example working with dx serve

* add more examples

* fix clippy

* fix formatting

* fix hot reload doctest imports

* fix axum imports

* don't run server doc tests

* Fix hot reload websocket doc examples

packages/fullstack/src/server_context.rs

@@ -159,7 +159,8 @@ pub async fn extract<E: FromServerContext<I>, I>() -> Result<E, E::Rejection> {
     E::from_request(&server_context()).await
 }
 
-pub(crate) fn with_server_context<O>(context: DioxusServerContext, f: impl FnOnce() -> O) -> O {
+/// Run a function inside of the server context.
+pub fn with_server_context<O>(context: DioxusServerContext, f: impl FnOnce() -> O) -> O {
     // before polling the future, we need to set the context
     let prev_context = SERVER_CONTEXT.with(|ctx| ctx.replace(Box::new(context)));
     // poll the future, which may call server_context()