[HeapViewer] Improve preview for byte[] arrays. #407
Description
The current implementation displays preview of byte[] array as a consecutive list of signed decimal numbers separated by comma. This is not always useful especially in situation when byte[] contains ASCII characters. To improve it, the preview for byte[] array will look similar to hexdump -C output. Bytes will be represented as hex values followed by the same bytes as printable characters. This way users can see ASCII text in byte[] array even if it is buried inside binary data. The hex representation seems to be generally more useful too.