chore: continue to consolidate

packages/core/examples/simple_hello.rs

@@ -0,0 +1,9 @@
+use dioxus::prelude::*;
+use dioxus_core as dioxus;
+use dioxus_core_macro::*;
+use dioxus_html as dioxus_elements;
+
+// very tiny hello world
+fn main() {
+    dioxus::VirtualDom::new(|cx| rsx!(cx, "hello world"));
+}