feat: ENG-93595 - create DCI volume from s3 origin using oidc

[narasul]

jig volumes create --name model-weights --source s3://my-bucket/weights --aws-oidc-role-arn arn:aws:iam::123456789012:role/together

Will work after this is shipped: https://github.com/togethercomputer/together-deployments/pull/379

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