add integration tests

Author: maximsemenov80

dotnet/src/Azure.Iot.Operations.Protocol/AssemblyInfo.cs

@@ -0,0 +1,13 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("Azure.Iot.Operations.Protocol.IntegrationTests")]
+
+namespace Azure.Iot.Operations.Protocol;
+
+public class AssemblyInfo {
+    // This class is intentionally left empty.
+    // It serves as a placeholder for assembly-level attributes and metadata.
+}

dotnet/test/Azure.Iot.Operations.Protocol.IntegrationTests/ChunkingMqttClientTests.cs

@@ -0,0 +1 @@
+