core&ui: add contest balloon list (#578)

Co-authored-by: undefined <i@undefined.moe>

packages/ui-default/package.json

@@ -84,6 +84,7 @@
     "qrcode": "^1.5.3",
     "queue-microtask": "^1.2.3",
     "react": "^18.2.0",
+    "react-colorful": "^5.6.1",
     "react-dnd": "^16.0.1",
     "react-dnd-html5-backend": "^16.0.1",
     "react-dom": "^18.2.0",