added tutorial controller

src/BackendTutorial/Controllers/V1/TutorialController.cs

@@ -0,0 +1,17 @@
+using Asp.Versioning;
+using Infrastructure;
+using Microsoft.AspNetCore.Mvc;
+
+namespace BackendTutorial.Controllers.V1;
+
+[ApiVersion("1.0")]
+[Route("tutorial/{version:apiVersion}")]
+public class TutorialController(ILogger<TutorialController> logger) : DefaultControllerBase
+{
+    [HttpGet("hello")]
+    public async Task<MessageData<string>> HelloAsync()
+    {
+        logger.LogInformation("hello world");
+        return await Task.Run(() => Succeed<string>("hello world"));
+    }
+}