feat: Expose auth args for image extractor in agent

[Itxaka]

SDK gained passing Auth objects to the image extractor in https://github.com/kairos-io/kairos-sdk/releases/tag/v0.2.2 and agent already has that sdk version, but there is no way of exposing those args to the user.

This is about exposing those so the args can be passed down to the image extractor for easy use by consumers