Tools suite first version

Added

2 new tools to help in http request smuggling research/exploitation:

• httpoverride: simple tool to manipulate http request
• httpclient: perform request from raw http request (~curl with raw http request)
  • See request in browser (with or without cookie)
  • Follow redirection (if 30X response)
• Documentation on usage and exploitation

Changed

• httpcustomhouse: display missing bytes for Content-Length