First commit

Runtime/Attributes/NodeInfoAttribute.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Misaki.GraphView
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = true, AllowMultiple = false)]
+    public class NodeInfoAttribute : System.Attribute
+    {
+        public string Name { get; }
+        public string Category { get; }
+
+        public NodeInfoAttribute(string name, string category)
+        {
+            Name = name;
+            Category = category;
+        }
+    }
+}