Add articles on logging and progress (#717)

* Add articles on logging and progress
* Address comments in PR review

docs/concepts/progress/samples/client/Program.cs

@@ -0,0 +1,52 @@
+using System.Text.Json;
+using ModelContextProtocol;
+using ModelContextProtocol.Client;
+using ModelContextProtocol.Protocol;
+
+var endpoint = Environment.GetEnvironmentVariable("ENDPOINT") ?? "http://localhost:3001";
+
+var clientTransport = new SseClientTransport(new()
+{
+    Endpoint = new Uri(endpoint),
+    TransportMode = HttpTransportMode.StreamableHttp,
+});
+
+McpClientOptions options = new()
+{
+    ClientInfo = new()
+    {
+        Name = "ProgressClient",
+        Version = "1.0.0"
+    }
+};
+
+await using var mcpClient = await McpClientFactory.CreateAsync(clientTransport, options);
+
+var tools = await mcpClient.ListToolsAsync();
+foreach (var tool in tools)
+{
+    Console.WriteLine($"Connected to server with tools: {tool.Name}");
+}
+
+Console.WriteLine($"Calling tool: {tools.First().Name}");
+
+// <snippet_ProgressHandler>
+var progressHandler = new Progress<ProgressNotificationValue>(value =>
+{
+    Console.WriteLine($"Tool progress: {value.Progress} of {value.Total} - {value.Message}");
+});
+
+var result = await mcpClient.CallToolAsync(toolName: tools.First().Name, progress: progressHandler);
+// </snippet_ProgressHandler>
+
+foreach (var block in result.Content)
+{
+    if (block is TextContentBlock textBlock)
+    {
+        Console.WriteLine(textBlock.Text);
+    }
+    else
+    {
+        Console.WriteLine($"Received unexpected result content of type {block.GetType()}");
+    }
+}