add more optional info when register new interact-url

[brenocss]

Would be great if in interact we could add more info when we ask for a url.

"randomtoken.interact.sh":{
  "additional_info":{
          "registered_url":"https://vulnerabletoxss.com/form",
          "input_name": "vulnerable-form",
          "request_used": "POST /form HTTP/1.1\r\nHOST: vulnerabletoxss.com\r\n\r\nvulerable-form=<script src=//randomtoken.interact.sh>"
          }

Originally posted by @brenocss in #442 (comment)

[brenocss]

Would be great to detect which form is vulnerable, which host, etc