[Mobile Payments] Implement simpler built-in reader connection flow#8281

joshheald merged 10 commits intotrunkwoocommerce/woocommerce-ios:trunkfrom

issue/8082-simplify-BuiltInCardReaderConnectionControllerwoocommerce/woocommerce-ios:issue/8082-simplify-BuiltInCardReaderConnectionControllerCopy head branch name to clipboard