Added support for SigV3 library. Update authorization header building logic to use adj_signing_id.
Added ability to indicate if only final Android attribution is needed in attribution callback (by default attribution callback return intermediate attribution as well before final attribution if not enabled with this setter method) by setting the androidFinalAttributionEnabled member of the AdjustConfig instance.
adj_signing_id.androidFinalAttributionEnabledmember of theAdjustConfiginstance.