app center；增加發送ping的秒

Assets/AppCenter/Plugins/iOS/Crashes/Utility/NSErrorHelper.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+#if UNITY_IOS && !UNITY_EDITOR
+using System;
+using Exception = Microsoft.AppCenter.Unity.Crashes.Models.Exception;
+
+namespace Microsoft.AppCenter.Unity.Internal.Utility
+{
+    public static partial class NSErrorHelper
+    {
+        public static Exception Convert(IntPtr nsErrorPtr)
+        {
+            if (nsErrorPtr == IntPtr.Zero)
+            {
+                return null;
+            }
+            var domain = app_center_unity_nserror_domain(nsErrorPtr);
+            var errorCode = app_center_unity_nserror_code(nsErrorPtr);
+            var description = app_center_unity_nserror_description(nsErrorPtr);
+            return new Exception(string.Format("Domain: {0}, error code: {1}, description: {2}", domain, errorCode, description), string.Empty);
+        }
+    }
+}
+#endif