Add guide for CDN, menu reorg

doc/cdn/ComponentDoc.vue

@@ -0,0 +1,20 @@
+<template>
+    <DocSectionText v-bind="$attrs">
+        <p>Include the component to use with a script tag.</p>
+    </DocSectionText>
+    <DocSectionCode :code="code" hideToggleCode hideCodeSandbox hideStackBlitz />
+</template>
+
+<script>
+export default {
+    data() {
+        return {
+            code: {
+                basic: `
+<script src="https://unpkg.com/primevue/calendar/calendar.min.js"><\/script>
+`
+            }
+        };
+    }
+};
+</script>