init

Avalonia-PC/ViewModels/MainWindowViewModel.cs

@@ -0,0 +1,7 @@
+namespace Avalonia_PC.ViewModels
+{
+    public partial class MainWindowViewModel : ViewModelBase
+    {
+        public string Greeting { get; } = "Welcome to Avalonia!";
+    }
+}

Avalonia-PC/ViewModels/ViewModelBase.cs

@@ -0,0 +1,8 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Avalonia_PC.ViewModels
+{
+    public abstract class ViewModelBase : ObservableObject
+    {
+    }
+}