docs: move around examples

packages/atoms/examples/structured_app.rs

@@ -0,0 +1,10 @@
+fn main() {}
+
+use dioxus_core::prelude::*;
+
+static App: FC<()> = |ctx| {
+    //
+    use_initialize_app()
+};
+
+fn use_initialize_app(cx: &impl Scoped) {}