First commit

Runtime/Models/Nodes/SlotContainer.cs

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+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using UnityEngine;
+using Object = UnityEngine.Object;
+
+namespace Misaki.GraphView
+{
+    [Serializable]
+    public abstract class SlotContainer
+    {
+        [SerializeField]
+        private List<Slot> _inputs = new ();
+        [SerializeField]
+        private List<Slot> _outputs = new ();
+        
+        public ReadOnlyCollection<Slot> Inputs => _inputs.AsReadOnly();
+        public ReadOnlyCollection<Slot> Outputs => _outputs.AsReadOnly();
+        
+        public void AddInput(Slot input)
+        {
+            _inputs.Add(input);
+        }
+        
+        public void AddOutput(Slot output)
+        {
+            _outputs.Add(output);
+        }
+        
+        public void ClearInputs()
+        {
+            _inputs.Clear();
+        }
+        
+        public void ClearOutputs()
+        {
+            _outputs.Clear();
+        }
+    }
+}