Frequency navigation WIP

src/GuiApp/Avalonia/FileTime.GuiApp/Views/FrequencyNavigation.axaml

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+<UserControl
+    x:Class="FileTime.GuiApp.Views.FrequencyNavigation"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:viewModels="clr-namespace:FileTime.App.FrequencyNavigation.ViewModels;assembly=FileTime.App.FrequencyNavigation.Abstractions"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    x:CompileBindings="True"
+    x:DataType="viewModels:IFrequencyNavigationViewModel"
+    mc:Ignorable="d">
+    <Grid RowDefinitions="Auto,*">
+        <TextBox
+            KeyDown="Search_OnKeyDown"
+            Text="{Binding SearchText, Mode=TwoWay}" />
+        <ItemsRepeater
+            Grid.Row="1"
+            Items="{Binding FilteredMatches}">
+            <ItemsRepeater.ItemTemplate>
+                <DataTemplate x:DataType="x:String">
+                    <Grid Margin="5">
+                        <TextBlock Text="{Binding}" />
+                    </Grid>
+                </DataTemplate>
+            </ItemsRepeater.ItemTemplate>
+        </ItemsRepeater>
+    </Grid>
+</UserControl>