Save batch to s3

[peterdudfield]

Detailed Description

It would be good to save the batch before it goes into the model to s3

Context

• good to know what has gone into the model
• easy to debug

Possible Implementation

add code in here

• torch.save(filename) would do it
• the filename should include {i} and a timestamp, and perhaps the model name of the model
• load the s3 directory name from a env var would be great

There's a seperate task to create a specific s3 bucket and give rights to this component to use it, and a rentention cycle of the data.