Implemented layer LED assignment

Added a centralised ProfileEditorSurface for communication between VMs
Prefixed Surface, Device and Led with Artemis to differentiate them better

src/Artemis.UI/Screens/Module/ProfileEditor/ProfileTree/TreeItem/FolderViewModel.cs

@@ -0,0 +1,14 @@
+using Artemis.Core.Models.Profile.Abstract;
+using Artemis.UI.Services.Interfaces;
+
+namespace Artemis.UI.Screens.Module.ProfileEditor.ProfileTree.TreeItem
+{
+    public class FolderViewModel : TreeItemViewModel
+    {
+        public FolderViewModel(TreeItemViewModel parent, ProfileElement folder, IProfileEditorService profileEditorService) : base(parent, folder, profileEditorService)
+        {
+        }
+
+        public override bool SupportsChildren => true;
+    }
+}