[WIP] Initial implem of fade animating elements.

examples/with-nextjs/src/excalidrawWrapper.tsx

@@ -1,4 +1,5 @@
 "use client";
+
 import * as excalidrawLib from "@excalidraw/excalidraw";
 import { Excalidraw } from "@excalidraw/excalidraw";
 
@@ -13,6 +14,7 @@ const ExcalidrawWrapper: React.FC = () => {
         appTitle={"Excalidraw with Nextjs Example"}
         useCustom={(api: any, args?: any[]) => {}}
         excalidrawLib={excalidrawLib}
+        showFadeDemo={true}
       >
         <Excalidraw />
       </App>