Add instance configuration method for directing configuring an instance

[bkegley]

This adds a new editInstanceConfiguration method that allows directly configuring an existing instance in the config wizard.

Example usage:

    prismatic.editInstanceConfiguration({
      instanceId,
      selector: `#${embeddedDivId}`,
      theme: "LIGHT",
      screenConfiguration: {
        configurationWizard: {
          triggerDetailsConfiguration: "hidden",
        },
      },
      onCancel: onClose,
      onSuccess: onClose,
      onDelete: onClose,
    });

[jpeters5392]

This will leak the event listener. You will need to provide an abort controller like what we did in iframe.ts