filter out near duplicate responses

[dogancanbakir]

Closes #758

$ go run . -u https://httpbin.org -path xml,json,html,html -fd -v

    __    __  __       _  __
   / /_  / /_/ /_____ | |/ /
  / __ \/ __/ __/ __ \|   /
 / / / / /_/ /_/ /_/ /   |
/_/ /_/\__/\__/ .___/_/|_|
             /_/

                projectdiscovery.io

[INF] Current httpx version v1.6.8 (latest)
[WRN] UI Dashboard is disabled, Use -dashboard option to enable
https://httpbin.org/html
[WRN] Skipping duplicate response with simhash 9850149872654300798
https://httpbin.org/xml
https://httpbin.org/json