app center；增加發送ping的秒

Assets/AppCenter/Plugins/AppCenterSDK/Distribute/Android/DistributeDelegate.cs

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+#if UNITY_ANDROID && !UNITY_EDITOR
+using UnityEngine;
+
+namespace Microsoft.AppCenter.Unity.Distribute.Internal
+{
+    class DistributeDelegate : AndroidJavaProxy
+    {
+        private DistributeDelegate() : base("com.microsoft.appcenter.distribute.DistributeListener")
+        {
+        }
+
+        public static void SetDelegate()
+        {
+            var distribute = new AndroidJavaClass("com.microsoft.appcenter.distribute.Distribute");
+            distribute.CallStatic("setListener", new DistributeDelegate());
+        }
+
+        bool onReleaseAvailable(AndroidJavaObject activity, AndroidJavaObject details)
+        {
+            if (Distribute.ReleaseAvailable == null)
+            {
+                return false;
+            }
+            var releaseDetails = ReleaseDetailsHelper.ReleaseDetailsConvert(details);
+            return Distribute.ReleaseAvailable.Invoke(releaseDetails);
+        }
+
+        void onNoReleaseAvailable(AndroidJavaObject activity)
+        {
+            if (Distribute.NoReleaseAvailable == null)
+            {
+                return;
+            }
+            Distribute.NoReleaseAvailable.Invoke();
+        }
+    }
+}
+#endif