EngagementSDKDelegate

A delegate which the EngagementSDK will inform about important events, such as setup errors.

sdk(_:setupFailedWithError:)

Called when the given sdk has failed to setup properly

Upon receiving this call, the sdk should be considered invalid and unuseable. If caused by some transient failure like a poor network, a new EngagementSDK should be created.
sdk(setupCompleted:)