Focus next/previous input element with Tab

src/ConsoleApp/FileTime.ConsoleUI.App.Abstractions/IConsoleAppState.cs

@@ -1,7 +1,10 @@
-using FileTime.App.Core.ViewModels;
+using System.Collections.ObjectModel;
+using FileTime.App.Core.ViewModels;
 
 namespace FileTime.ConsoleUI.App;
 
 public interface IConsoleAppState : IAppState
 {
+    string ErrorText { get; set; }
+    ObservableCollection<string> PopupTexts { get; }
 }