Refactor AuthController 'me' endpoint and remove auth

- Changed [HttpGet("me")] to [HttpGet(nameof(Me))] for route safety.
- Renamed method from GetMe to Me for consistency.
- Removed [Authorize] attribute to allow unauthenticated access.

Controllers/AuthController.cs

@@ -11,8 +11,8 @@ namespace FakeNTLMServer.Controllers;
 public class AuthController : ControllerBase
 {
     [Authorize]
-    [HttpGet("me")]
-    public IActionResult GetMe()
+    [HttpGet(nameof(Me))]
+    public IActionResult Me()
     {
         var identity = User.Identity;
         return Ok(new