Added ToolboxItem class and dummy view model

RainmeterStudio/UI/ViewModel/ToolboxItemViewModel.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+using RainmeterStudio.Core.Editor.Features;
+
+namespace RainmeterStudio.UI.ViewModel
+{
+    public class ToolboxItemViewModel
+    {
+        /// <summary>
+        /// Gets the toolbox item
+        /// </summary>
+        public ToolboxItem Item { get; private set; }
+
+        /// <summary>
+        /// Gets the display text of the toolbox item
+        /// </summary>
+        public string DisplayText
+        {
+            get
+            {
+                return Item.Name;
+            }
+        }
+
+        /// <summary>
+        /// Gets the tooltip text of the toolbox item
+        /// </summary>
+        public string ToolTip
+        {
+            get
+            {
+                return "Placeholder tooltip for " + Item.Name;
+            }
+        }
+
+        /// <summary>
+        /// Gets the icon
+        /// </summary>
+        public ImageSource Icon
+        {
+            get
+            {
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Initializes the toolbox item view model
+        /// </summary>
+        /// <param name="item"></param>
+        public ToolboxItemViewModel(ToolboxItem item)
+        {
+            Item = item;
+        }
+    }
+}