[Web support] Connect client attributes, destroy and flush methods#163

EmilianoSanchez wants to merge 1 commit intoFME-11223-web-support_baselinesplitio/flutter-sdk-plugin:FME-11223-web-support_baselinefrom

FME-11223-web-support-client-attributessplitio/flutter-sdk-plugin:FME-11223-web-support-client-attributesCopy head branch name to clipboard