Submit kcap to S3 bucket

[rabbitstack]

Description

It might be useful to automatically upload the kcap file to the S3 bucket. For this purpose, the CLI should get an additional flag that would indicate whether the capture file is submitted when the user stops the capturing process. We should strive to make the CLI sexy. For example, introducing a progress bar to render the upload progress.

I'm inclined to initially design the solution in a generic way, regardless of the object store platform. This means we should model the configuration to accept future storage backends.

References

https://github.com/minio/minio
https://github.com/minio/minio-goK
https://github.com/aws/aws-sdk-go