add sample pages

docs/SupportedAppProtocol/index.md

@@ -0,0 +1,12 @@
+---
+layout: default
+title: SupportedAppProtocol API
+nav_order: 3
+has_children: true
+permalink: /docs/SupportedAppProtocol
+---
+
+# UI Components
+
+To make it as easy as possible to write documentation in plain Markdown, most UI components are styled using default Markdown elements with few additional CSS classes needed.
+{: .fs-6 .fw-300 }