Migrate desktop app to Avalonia and publish cross-platform releases

Views/ResultWindow.axaml.cs

@@ -0,0 +1,23 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using kcsj.Models;
+using kcsj.Services;
+
+namespace kcsj.Views;
+
+public partial class ResultWindow : Window
+{
+    public ResultWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public ResultWindow(LeastSquaresResult result)
+        : this()
+    {
+        this.FindControl<TextBox>("ResultTextBox")!.Text = Report.BuildResultText(result);
+    }
+
+    private void Close_Click(object? sender, RoutedEventArgs e) => Close();
+}