Improve how to host McpServer (#30)

samples/TestServerWithHosting/Program.cs

@@ -0,0 +1,37 @@
+using McpDotNet;
+using Microsoft.Extensions.Hosting;
+using Serilog;
+
+Log.Logger = new LoggerConfiguration()
+           .MinimumLevel.Verbose() // Capture all log levels
+           .WriteTo.File(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs", "TestServer_.log"),
+               rollingInterval: RollingInterval.Day,
+               outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}")
+           .WriteTo.Debug()
+           .WriteTo.Console()
+           .CreateLogger();
+
+try
+{
+    Log.Information("Starting server...");
+
+    var builder = Host.CreateApplicationBuilder(args);
+    builder.Services.AddSerilog();
+    builder.Services.AddMcpServer()
+        .WithStdioServerTransport()
+        .WithCallToolHandler(async (r, ct) => new McpDotNet.Protocol.Types.CallToolResponse());
+
+    var app = builder.Build();
+
+    await app.RunAsync();
+    return 0;
+}
+catch (Exception ex)
+{
+    Log.Fatal(ex, "Host terminated unexpectedly");
+    return 1;
+}
+finally
+{
+    await Log.CloseAndFlushAsync();
+}