StoreKit 2 Refresh Receipt

Even though StoreKit 2 keeps everything in sync automatically, the HIG still requires us to have Restore Purchase button. In Original API for In-App Purchase we d either call SKRefreshReceiptRequest or restoreCompletedTransactions() on instance of SKPaymentQueue. In StoreKit 2 an equivalent to that would be AppStore.sync(). In regular operations, there’s no need to call sync(). StoreKit…