Initial commit of some work creating RMO single-page app

Doesn't work yet, but they both start, so checkpoint.

ts/AppRMO.vue

@@ -0,0 +1,31 @@
+<script setup lang="ts">
+import { ref, computed } from "vue";
+import { useHead } from "@vueuse/head";
+
+const count = ref<number>(0);
+const message = ref<string>("hey");
+
+const increment = (): void => {
+	count.value++;
+};
+
+// Reactive head management
+useHead({
+	title: computed(() => `Count: ${count.value} - My Vue App`),
+	link: [
+		{
+			rel: "icon",
+			type: "image/x-icon",
+			href: "/favicon.ico",
+		},
+	],
+});
+</script>
+
+<template>
+	<div id="app">
+		<h1>{{ message }}</h1>
+		<p>Count: {{ count }}</p>
+		<button @click="increment">Increment</button>
+	</div>
+</template>