List<T> compatibility methods implemented. Unit tests extended. README.md updated.

Recyclable.Collections.Benchmarks/Benchmarks/ConvertAll.cs

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+namespace Recyclable.Collections.Benchmarks
+{
+	public partial class RecyclableCollectionsBenchmarks
+	{
+		public void Array_ConvertAll()
+		{
+			var data = TestObjects;
+			var list = TestObjects;
+			var dataCount = TestObjectCountForSlowMethods;
+			DoNothing(Array.ConvertAll(list, static (item) => (long) item));
+		}
+
+		public void List_ConvertAll()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsList;
+			var dataCount = TestObjectCountForSlowMethods;
+			DoNothing(list.ConvertAll(static (item) => (long)item));
+		}
+
+		public void PooledList_ConvertAll()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsPooledList;
+			var dataCount = TestObjectCountForSlowMethods;
+			using var converted = list.ConvertAll(static (item) => (long)item);
+			DoNothing(converted);
+		}
+
+		public void RecyclableList_ConvertAll()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsRecyclableList;
+			var dataCount = TestObjectCountForSlowMethods;
+			using RecyclableList<long> converted = list.ConvertAll(static (item) => (long)item);
+			DoNothing(converted);
+		}
+
+		// public void RecyclableLongList_ConvertAll()
+		// {
+		// 	var data = TestObjects;
+		// 	var list = TestObjectsAsRecyclableLongList;
+		// 	var dataCount = TestObjectCountForSlowMethods;
+		// 	using RecyclableList<long> converted = list.ConvertAll(static (item) => (long)item);
+		// 	DoNothing(converted);
+		// }
+	}
+}