add bulk read of intptr memory domains.

speeds up ram search in quicknes

src/BizHawk.Emulation.Common/Base Implementations/MemoryDomainImpls.cs

@@ -1,5 +1,6 @@
 using BizHawk.Common;
 using System;
+using System.Runtime.InteropServices;
 
 namespace BizHawk.Emulation.Common
 {
@@ -160,6 +161,21 @@ namespace BizHawk.Emulation.Common
 			}
 		}
 
+		public override void BulkPeekByte(Range<long> addresses, byte[] values)
+		{
+			var start = (ulong)addresses.Start;
+			var count = addresses.Count();
+
+			if (start < (ulong)Size && (start + count) <= (ulong)Size)
+			{
+				Marshal.Copy((IntPtr)((ulong)Data + start), values, 0, (int)count);
+			}
+			else
+			{
+				throw new ArgumentOutOfRangeException(nameof(addresses));
+			}
+		}
+
 		public void SetSize(long size)
 		{
 			Size = size;