First commit

Sample/Runtime/Nodes/OutputNode.cs

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+using UnityEngine;
+
+namespace Misaki.GraphView.Sample
+{
+    [NodeInfo("Output Node", "Output")]
+    public class OutputNode : BackTraceBaseNode
+    {
+        [NodeInput]
+        private float _input;
+        
+        protected override void OnExecute()
+        {
+            Debug.Log(_input);
+        }
+    }
+}