WIP

* Using publicized mono assemblies
* Remaking UI from scratch. Done the Scene Explorer so far.

src/UI/Widgets/TransformTree/CachedTransform.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using UnityEngine;
+
+namespace UnityExplorer.UI.Widgets
+{
+    public class CachedTransform
+    {
+        public Transform RefTransform { get; }
+        public CachedTransform Parent { get; internal set; }
+
+        public string Name { get; internal set; }
+        public int ChildCount { get; internal set; }
+        public int Depth { get; internal set; }
+
+        public bool Expanded { get; set; }
+
+        public CachedTransform(Transform transform, CachedTransform parent = null)
+        {
+            RefTransform = transform;
+            Expanded = false;
+            Parent = parent;
+            Update();
+        }
+
+        public void Update()
+        {
+            Name = RefTransform.name;
+            ChildCount = RefTransform.childCount;
+            Depth = Parent?.Depth + 1 ?? 0;
+        }
+    }
+}