refactor to handle itemview kill/create, fix sorting table, cleanup

TaskSerializer.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using UnityEngine;
+
+namespace UIFixes
+{
+    public class TaskSerializer<T> : MonoBehaviour
+    {
+        private Func<T, Task> func;
+        private Queue<T> items;
+        private Task currentTask;
+        private TaskCompletionSource totalTask;
+
+        public Task Initialize(IEnumerable<T> items, Func<T, Task> func)
+        {
+            this.items = new(items);
+            this.func = func;
+
+            currentTask = Task.CompletedTask;
+            totalTask = new TaskCompletionSource();
+
+            Update();
+
+            return totalTask.Task;
+        }
+
+        public void Update()
+        {
+            if (!currentTask.IsCompleted)
+            {
+                return;
+            }
+
+            if (items.Any())
+            {
+                currentTask = func(items.Dequeue());
+            }
+            else
+            {
+                totalTask.Complete();
+                func = null;
+                Destroy(this);
+            }
+        }
+    }
+}