feat(financial-events): add ShipmentSettleEventList for DD+7 delivery date policy

Amazon returns a ShipmentSettleEventList in the v0 FinancialEvents response for
orders subject to the Delivery Date Policy (DD+7). Adding the property to the
FinancialEvents model ensures these settle events are deserialised rather than
silently discarded.

Author: ProNotion

Source/FikaAmazonAPI/AmazonSpApiSDK/Models/Finances/FinancialEvents.cs

@@ -82,6 +82,12 @@ public FinancialEvents() { }
         [DataMember(Name = "ShipmentEventList", EmitDefaultValue = false)]
         public ShipmentEventList ShipmentEventList { get; set; }
 
+        /// <summary>
+        /// A list of shipment settle events for orders subject to the Delivery Date Policy (DD+7).
+        /// </summary>
+        [DataMember(Name = "ShipmentSettleEventList", EmitDefaultValue = false)]
+        public ShipmentEventList ShipmentSettleEventList { get; set; }
+
         /// <summary>
         /// A list of refund events.
         /// </summary>