Add TransactionConfiguration

Trust/Payment/Types/TransactionConfiguration.swift

@@ -0,0 +1,11 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import Foundation
+
+struct TransactionConfiguration {
+    let speed: TransactionSpeed
+
+    init(speed: TransactionSpeed = .regular) {
+        self.speed = speed
+    }
+}