Add project files.

App/WeddingBuilder/Views/ProjectConfigurationView.axaml.cs

@@ -0,0 +1,17 @@
+using Avalonia.Styling;
+using FluentAvalonia.UI.Controls;
+using PropertyChanged;
+using System;
+
+namespace Builder;
+
+[DoNotNotify]
+public partial class ProjectConfigurationView : ContentDialog, IStyleable
+{
+    public ProjectConfigurationView()
+    {
+        InitializeComponent();
+    }
+
+    Type IStyleable.StyleKey => typeof(ContentDialog);
+}