Add assets

Assets/Cainos/Third Party/Lucid Editor/Runtime/PropertyGroupAttribute.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Linq;
+
+namespace Cainos.LucidEditor
+{
+    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = true)]
+    public class PropertyGroupAttribute : Attribute
+    {
+        public readonly string path;
+        public readonly string name;
+        public readonly int groupDepth;
+
+        public PropertyGroupAttribute(string groupPath)
+        {
+            this.path = groupPath;
+            name = path.Split('/').Last();
+            groupDepth = path.Count(x => x == '/');
+        }
+    }
+}