Cross language incompatibility : java namespace in sqs json body causing deserialization issue on dotnet

[cboudereau]

Hi!

First of all, thank you for your amazing work done.

The java library is not compatible with the dotnet library and others since the java namespace is located inside a dynamic array raol/amazon-sqs-net-extended-client-lib#32.

In golang, the library tends to support the latest version but still, previous java library with other namespace is not compatible when the golang client sends a sqs message to a java consumer. Here is an attempt which is not compatible with older java versions: https://github.com/jwcorle/sqs-extended-client-go/blob/main/client.go#L201

I find that putting such namespace is annoying, how about using only the pointer with the bucketname and the s3key like in dotnet and golang