Create SQS AWS custom cedentials example with 2.x

[vdesabou]

https://github.com/vdesabou/kafka-docker-playground/blob/master/connect/connect-aws-sqs-source/sqs-source-assuming-iam-role-with-custom-aws-credential-provider.sh

It only works with 1.2.x not 2.x

https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/migration-client-credentials.html

[vdesabou]

https://stackoverflow.com/questions/67272319/how-to-configure-using-stsassumerolesessioncredentialsprovider-with-rolesessionn