Add ScriptablesList archetype

Author: arimger

Assets/Editor Toolbox/Scripts/Attributes/ToolboxAttributes/ArchetypeAttributes/ScriptablesListAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Diagnostics;
+
+namespace UnityEngine
+{
+    [AttributeUsage(AttributeTargets.Field, AllowMultiple = true)]
+    [Conditional("UNITY_EDITOR")]
+    public class ScriptablesListAttribute : ToolboxArchetypeAttribute
+    {
+        public override ToolboxAttribute[] Process()
+        {
+            return new ToolboxAttribute[]
+            {
+                new InLineEditorAttribute(),
+                new ReorderableListAttribute()
+                {
+                    HasLabels = false
+                }
+            };
+        }
+    }
+}