feat(backend,frontend): copy liked songs into a shareable playlist

frontend/static/favicon.svg

@@ -0,0 +1,8 @@
+<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg">
+  <rect fill="#0b0b0a" height="32" width="32" />
+  <g fill="#0b0b0a" stroke="#ecebe6" stroke-linejoin="round" stroke-width="1.6">
+    <path d="M4 12h7l2-5 2 3 2-6 2 8h9v20H4Z" />
+    <path d="M4 19h8l2-3 2 2 2-7 2 8h8v13H4Z" />
+    <path d="M4 26h9l2-4 2 3 1-3 2 4h8v6H4Z" />
+  </g>
+</svg>