add: Patchable items and frames

src/DataStructures/PatchableItems/PatchableHashSet.cs

@@ -0,0 +1,23 @@
+using System.Collections;
+
+namespace Polonium.DataStructures.PatchableItems;
+
+public class PatchableHashSet<T> : IEnumerable<T>
+{
+    public HashSet<T> Data { get; set; } = new();
+    public void Add(T item) => Data.Add(item);
+    public void Remove(T item) => Data.Remove(item);
+    public void Clear() => Data.Clear();
+    public bool Contains(T item) => Data.Contains(item);
+    public int Count => Data.Count;
+    
+    
+    public UpdateMethods UpdateMethod { get; set; } = UpdateMethods.Update;
+    public delegate void CustomUpdatedEventHandler(HashSet<T> set);
+    public event CustomUpdatedEventHandler CustomUpdated;
+    public void CustomUpdate(HashSet<T> set) => CustomUpdated?.Invoke(set);
+
+    public IEnumerator<T> GetEnumerator() => Data.GetEnumerator();
+
+    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+}