Filter logs by response length diff.

[leesoh]

I may take a swing at this if I am feeling ambitious, but it likely won't be in the next few months so opening an issue in case anyone else wants to.

When using AutoRepeater to hunt for vertical and horizontal privesc it would be really helpful to filter logs based on the response length difference. A response length difference of 0 is a strong indication that two different requests received identical responses and that a VPE/HPE bug may be present.

[vikasprogrammer]

+1

[Regala]

+11