use decorators to improve openapi endpoint categories

Jellyfin.Api/Controllers/ClientLogController.cs

@@ -15,6 +15,7 @@ namespace Jellyfin.Api.Controllers;
 /// Client log controller.
 /// </summary>
 [Authorize]
+[Tags("System")]
 public class ClientLogController : BaseJellyfinApiController
 {
     private const int MaxDocumentSize = 1_000_000;