Readd missing import files

Imports/RuntimeGizmos/Scripts/Utils/NormalSingleton.cs

@@ -0,0 +1,17 @@
+using UnityEngine;
+using System.Collections;
+
+namespace Wing.Utils
+{
+    public class NormalSingleton<T> where T : new()
+    {
+        protected static T s_pInstance = new T();
+        public static T Instance
+        {
+            get
+            {
+                return s_pInstance;
+            }
+        }
+    }
+}