add save distinctId, optionalData and optionalDataCompletion on chat method in Qiscus object
add save distinctId, optionalData and optionalDataCompletion on chat method in Qiscus object

qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios