4l3ss

Hi, it looks like the java SDK doesn't expose a way to get and set the `open_tracking_opted_in`, `open_tracking_opted_out`, `click_tracking_opted_in`, `click_tracking_opted_out` fields in the RegisterEmailChannel builder. These are documented here https://docs.airship.com/api/ua/?openapi=http#operation/api/channels/email/post...