feat: add auto shimmer functonality

Author: numandev1

CONTRIBUTING.md

@@ -48,7 +48,7 @@ yarn example ios
 To confirm that the app is running with the new architecture, you can check the Metro logs for a message like this:
 
 ```sh
-Running "AutoSkeletonExample" with {"fabric":true,"initialProps":{"concurrentRoot":true},"rootTag":1}
+Running "AutoShimmerExample" with {"fabric":true,"initialProps":{"concurrentRoot":true},"rootTag":1}
 ```
 
 Note the `"fabric":true` and `"concurrentRoot":true` properties.