Add filter into response body/header

Hi,

I would like to suggest this:
- filter http response body
- filter http response header

for example:
ffuf -w test.txt -u https://url.com/FUZZ -rb "PHP Version&&&&PHP API&&&&PHP Extension"

rb = response body

e.g.: ffuf will detect https://url.com/phpinfo.php and in the http response body we will have the words:
`PHP Version` AND
`PHP API` AND
`PHP Extension`

integrate this https://github.com/proabiral/inception idea into ffuf