feat: webapp/card delivery server example

icons/cloudmusic.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <rect width="24" height="24" rx="6" fill="#c62f2f"/>
+  <path d="M9 18V6l10-2v11" fill="none" stroke="#fff" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle cx="6.5" cy="18" r="2.2" fill="#fff"/>
+  <circle cx="16.5" cy="15" r="2.2" fill="#fff"/>
+</svg>

icons/demo.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <rect width="24" height="24" rx="6" fill="#ff6900"/>
+  <text x="12" y="17" font-size="13" text-anchor="middle" fill="white" font-family="sans-serif">H</text>
+</svg>