[FEATURE] Move callable session from S3 Storage client to AWS Client

[Andre-Lx-Costa]

Update the AwsClient class:

• Add a new parameter session_callable to the init method. Store this callable as an instance attribute. Modify the initialize_session method to use this stored callable if no other callable is provided during the session initialization.

• Update the usage: When creating an AwsClient instance, pass the session_callable directly to it. This makes the relationship between the AwsClient and the session initialization logic clearer and more direct.

End result example:

return S3StorageClient.create( auth=AwsClient(session_callable=session_callable))

instead of

return S3StorageClient.create(auth=AwsClient(), session_callable=session_callable )