app center；增加發送ping的秒

Assets/AppCenter/Plugins/AppCenterSDK/Crashes/Models/ErrorAttachmentLog.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+using System;
+
+namespace Microsoft.AppCenter.Unity.Crashes
+{
+    public class ErrorAttachmentLog
+    {
+        public string Text { get; private set; }
+        public byte[] Data { get; private set; }
+        public string FileName { get; private set; }
+        public string ContentType { get; private set; }
+        public AttachmentType Type { get; private set; }
+
+        public static ErrorAttachmentLog AttachmentWithText(string text, string fileName)
+        {
+            return new ErrorAttachmentLog
+            {
+                Text = text,
+                FileName = fileName,
+                Type = AttachmentType.Text
+            }; 
+        }
+
+        public static ErrorAttachmentLog AttachmentWithBinary(byte[] data, string fileName, string contentType)
+        {
+            return new ErrorAttachmentLog
+            {
+                Data = data,
+                FileName = fileName,
+                ContentType = contentType,
+                Type = AttachmentType.Binary
+            }; 
+        }
+
+        public enum AttachmentType { Text, Binary }
+    }
+}