RecyclableBlockList renamed to RecyclableArrayList for clarity. First set of optimizations and implementation.

Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableArrayList.cs

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+using BenchmarkDotNet.Attributes;
+
+namespace Recyclable.Collections.Benchmarks
+{
+	public partial class RecyclableCollectionsBenchmarks : BenchmarkBase
+	{
+		private readonly RecyclableArrayList<object> _testRecyclableArrayList;
+
+		public RecyclableCollectionsBenchmarks()
+		{
+			_testRecyclableArrayList = new(TestObjects, TestObjectCount);
+			_testRecyclableList = new(TestObjects, TestObjectCount);
+			_testArray = TestObjects.ToArray();
+			_testList = new(TestObjects);
+		}
+
+		~RecyclableCollectionsBenchmarks()
+		{
+			_testRecyclableArrayList?.Dispose();
+			_testRecyclableList?.Dispose();
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_Create()
+		{
+			using var list = new RecyclableArrayList<object>();
+			DoNothing(list);
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_Create_0Capacity()
+		{
+			using var list = new RecyclableArrayList<object>(0);
+			DoNothing(list);
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_Create_WithCapacity()
+		{
+			using var list = new RecyclableArrayList<object>(TestObjectCount);
+			DoNothing(list);
+		}
+
+		//[Benchmark]
+		public void RecyclableArrayList_Add()
+		{
+			var data = TestObjects;
+			var dataCount = TestObjectCount;
+			using var list = new RecyclableArrayList<object>();
+			for (var i = 0; i < dataCount; i++)
+			{
+				list.Add(data[i]);
+			}
+		}
+
+		//[Benchmark]
+		public void RecyclableArrayList_Add_WithCapacity()
+		{
+			var data = TestObjects;
+			var dataCount = TestObjectCount;
+			using var list = new RecyclableArrayList<object>(dataCount);
+			for (var i = 0; i < dataCount; i++)
+			{
+				list.Add(data[i]);
+			}
+		}
+
+		//[Benchmark]
+		public void RecyclableArrayList_GetItem()
+		{
+			var data = _testRecyclableArrayList;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(data[i]);
+			}
+		}
+
+		//[Benchmark]
+		public void RecyclableArrayList_SetItem()
+		{
+			var data = _testRecyclableArrayList;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				data[i] = TestObjects[i];
+			}
+		}
+
+		//[Benchmark]
+		public void RecyclableArrayList_Count()
+		{
+			var data = _testRecyclableArrayList;
+			DoNothing(data.Count);
+		}
+	}
+}