Make product API versions independently installable

backend/product/customers/internal/service.go

@@ -243,6 +243,13 @@ func NewAccountService(
 	if err != nil {
 		return nil, err
 	}
-	return &service{logger: logger, config: config, accountDB: stores.Accounts,
-		vdb: stores.Verification, sessions: stores.RefreshTokens, transactions: dbf.TransactionFactory()}, nil
+	return FromStores(l, config, stores, dbf.TransactionFactory())
+}
+
+func FromStores(l mlogger.Logger, config *middleware.PasswordConfig, stores *authstorage.Stores, transactions transaction.Factory) (*service, error) {
+	if config == nil || stores == nil || transactions == nil {
+		return nil, merrors.InvalidArgument("customer dependencies are required")
+	}
+	return &service{logger: l.Named("account_service"), config: config, accountDB: stores.Accounts,
+		vdb: stores.Verification, sessions: stores.RefreshTokens, transactions: transactions}, nil
 }