Added .gitignore and created delete window.

PcgsInvUi/ViewModels/DeleteWindowViewModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Reactive;
+using System.Windows.Input;
+using System.Xml;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using ReactiveUI;
+
+namespace PcgsInvUi.ViewModels;
+
+public class DeleteWindowViewModel : ViewModelBase
+{
+    public ReactiveCommand<Unit, object> OkCommand { get; } = ReactiveCommand.Create(() => (object)true);
+    public ReactiveCommand<Unit, object> CancelCommand { get; } = ReactiveCommand.Create(() => (object)false);
+}