nested tree node traversal helpers

src/App/Models/TreeNode.cs

@@ -0,0 +1,19 @@
+using Bit.App.Abstractions;
+using System.Collections.Generic;
+
+namespace Bit.App.Models
+{
+    public class TreeNode<T> where T : ITreeNodeObject
+    {
+        public TreeNode(T node, string name, T parent)
+        {
+            Parent = parent;
+            Node = node;
+            Node.Name = name;
+        }
+
+        public T Parent { get; set; }
+        public T Node { get; set; }
+        public List<TreeNode<T>> Children { get; set; } = new List<TreeNode<T>>();
+    }
+}