Improve inline docs (#2460)

Improve inline docs

* improve incorrect event handler return error message

* Improve event handler docs

* document the eval functions

* document spawn and common spawn errors

* fix event handler docs

* add notes about how you use attributes and elements in rsx

* add doc aliases for attributes and events we rename

* add some more aliases for common search terms

* don't doc ignore any public examples in core

* don't ignore public doc examples in ssr

* don't ignore examples in the dioxus package readme

* add a warning when you launch without a renderer enabled

* fix some outdated element docs

* add a bunch of examples to resource

* add notes about desktop events

* add more docs for use_resource

* add on_unimplemented hint to Dependency

* fix some unresolved links

* add examples to each of the router traits

* add not implemented errors for router traits

* add an example to the routable trait

* expand rsx macro docs

* improve memo docs

* update the dioxus readme

* mention dioxus crate features in the docs

* fix a bunch of doc tests

* fix html doc tests

* fix router doc tests

* fix dioxus signals doc tests

* fix dioxus ssr doc tests

* fix use_future example in the hooks cheat sheet

* add a javascript alias for eval

* fix hook explanation values

* remove unused embed-doc-image dependency

packages/signals/src/copy_value.rs

@@ -114,6 +114,11 @@ impl<T: 'static, S: Storage<T>> CopyValue<T, S> {
     pub fn id(&self) -> GenerationalBoxId {
         self.value.id()
     }
+
+    /// Get the underlying [`GenerationalBox`] value.
+    pub fn value(&self) -> GenerationalBox<T, S> {
+        self.value
+    }
 }
 
 impl<T: 'static, S: Storage<T>> Readable for CopyValue<T, S> {