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

Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.Array.cs

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+using BenchmarkDotNet.Attributes;
+
+namespace Recyclable.Collections.Benchmarks
+{
+	[MemoryDiagnoser]
+	public partial class RecyclableCollectionsBenchmarks : BenchmarkBase
+	{
+		private readonly object[] _testArray;
+
+		//[Benchmark(Baseline = true)]
+		public void Array_Create_WithCapacity()
+		{
+			DoNothing(new object[TestObjectCount]);
+		}
+
+		//[Benchmark]
+		public void Array_GetItem()
+		{
+			var data = _testArray;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(data[i]);
+			}
+		}
+
+		//[Benchmark]
+		public void Array_SetItem()
+		{
+			var data = _testArray;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				data[i] = TestObjects[i];
+			}
+		}
+
+		//[Benchmark]
+		public void Array_Count()
+		{
+			var data = _testArray;
+			DoNothing(data.Length);
+		}
+
+		//[Benchmark]
+		public void Array_LongCount()
+		{
+			var data = _testArray;
+			DoNothing(data.LongLength);
+		}
+	}
+}