Add health check trigger (#11)

Add a new HTTP trigger function for health check.

* Create `HealthCheckTrigger` function in `SampleFunctionApp/HttpTrigger/HealthCheckTrigger.cs` to check the health of the app without any form of authentication.
* Update `SampleFunctionApp/SampleFunctionApp.csproj` to include the new `HealthCheckTrigger` class.
* Update `README.md` to include the new health check feature under the "Features" section.

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/palkalaiselvand/Azure_HTTPTriggerFunctionSample?shareId=XXXX-XXXX-XXXX-XXXX).

Author: palkalaiselvand

README.md

@@ -12,6 +12,7 @@ Azure_HTTPTriggerFunctionSample
 - Azure queue are completely configurable from `localSettings.json` file
 - Supports both Service bus queue and Storage queue
 - Queue can be created dynamicaly on the fly
+- Health check endpoint to verify the app status
 
 ### Technology Used
 

SampleFunctionApp/HttpTrigger/HealthCheckTrigger.cs

@@ -0,0 +1,22 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Azure.WebJobs;
+using Microsoft.Azure.WebJobs.Extensions.Http;
+using Microsoft.Extensions.Logging;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+
+namespace SampleFunctionApp.HttpTrigger
+{
+    public static class HealthCheckTrigger
+    {
+        [FunctionName("HealthCheckTrigger")]
+        public static async Task<IActionResult> Run(
+            [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = null)] HttpRequest req,
+            ILogger log)
+        {
+            log.LogInformation("HealthCheckTrigger function processed a request.");
+
+            return new OkObjectResult("App is healthy");
+        }
+    }
+}

SampleFunctionApp/SampleFunctionApp.csproj

@@ -23,4 +23,7 @@
       <CopyToPublishDirectory>Never</CopyToPublishDirectory>
     </None>
   </ItemGroup>
-</Project>
+  <ItemGroup>
+    <Compile Include="HttpTrigger\HealthCheckTrigger.cs" />
+  </ItemGroup>
+</Project>