Shared exchange functionality (#214)

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetPositionHistoryOptions.cs

@@ -0,0 +1,15 @@
+namespace CryptoExchange.Net.SharedApis
+{
+    /// <summary>
+    /// Options for requesting position history
+    /// </summary>
+    public class GetPositionHistoryOptions : PaginatedEndpointOptions<GetPositionHistoryRequest>
+    {
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public GetPositionHistoryOptions(SharedPaginationSupport paginationType) : base(paginationType, true)
+        {
+        }
+    }
+}