Profile editor - Started implementing property add/remove handling

src/Artemis.Core/Events/LayerPropertyEventArgs.cs

@@ -0,0 +1,15 @@
+using System;
+using Artemis.Core.Models.Profile.LayerProperties;
+
+namespace Artemis.Core.Events
+{
+    public class LayerPropertyEventArgs : EventArgs
+    {
+        public LayerPropertyEventArgs(BaseLayerProperty layerProperty)
+        {
+            LayerProperty = layerProperty;
+        }
+
+        public BaseLayerProperty LayerProperty { get; }
+    }
+}