Add example for dealing with large object with aws s3 component

[rhtevan]

@davsclaus Thanks for yours help, and create this example to record what we have learnt.

[davsclaus]

Thanks a lot @rhtevan

If you want, you are welcome to write a blog post about this, we can put on the camel website https://github.com/apache/camel-website

The blogs are in that repo, and you can find one of the existing blogs, and copy and modify.