Update editor

Ghost.Editor.Core/Services/InspectorService.cs

@@ -0,0 +1,21 @@
+using Ghost.Editor.Core.Contracts;
+
+namespace Ghost.Editor.Core.Services;
+
+public class InspectorService : IInspectorService
+{
+    private IInspectable? _selected;
+
+    public IInspectable? Selected => _selected;
+
+    public event EventHandler<InspectorSelectionChangedEventArgs>? OnSelectionChanged;
+
+    public void SetSelected(IInspectable? inspectable, object? source)
+    {
+        if (_selected != inspectable)
+        {
+            _selected = inspectable;
+            OnSelectionChanged?.Invoke(this, new InspectorSelectionChangedEventArgs(source, inspectable));
+        }
+    }
+}