Implement hash fragments in the router (#2320)

* implement hash fragments in the router

* clean up query and search example

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/router/src/router_cfg.rs

@@ -1,7 +1,4 @@
-use crate::contexts::router::RoutingCallback;
-use crate::history::HistoryProvider;
 use crate::prelude::*;
-use crate::routable::Routable;
 use dioxus_lib::prelude::*;
 use std::sync::Arc;