Add support for WPF controls in plugins and method parameters in plugin commands

Torch.Server/ViewModels/EntityTreeViewModel.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Torch.Server.ViewModels
+{
+    /*
+    public class EntityTreeViewModel : ViewModel
+    {
+        public string GridsHeader => null;
+        public MTObservableCollection<>
+
+        public void Refresh()
+        {
+            
+        }
+    }*/
+}