Frequency navigation WIP

src/AppCommon/FileTime.App.FrequencyNavigation.Abstractions/ViewModels/IFrequencyNavigationViewModel.cs

@@ -0,0 +1,12 @@
+using FileTime.App.Core.ViewModels;
+
+namespace FileTime.App.FrequencyNavigation.ViewModels;
+
+public interface IFrequencyNavigationViewModel : IModalViewModel
+{
+    IObservable<bool> ShowWindow { get; }
+    List<string> FilteredMatches { get; }
+    string SearchText { get; set; }
+    string SelectedItem { get; set; }
+    void Close();
+}