First implementation

Recyclable.Collections/SystemRandomNumberGenerator.cs

@@ -0,0 +1,9 @@
+namespace Recyclable.Collections
+{
+	public class SystemRandomNumberGenerator : IRandomNumberGenerator
+	{
+		private static readonly Random _random = new();
+
+		public int NextInt32(int startIndex, int endIndex) => _random.Next(startIndex, endIndex);
+	}
+}