No auto-detection of HTTP protocol when specifying -request file

[Crypto-Cat]

When saving a HTTP request and running ffuf with the -request [filename] option, you have to specify -request-proto http.

Maybe a better approach would be to check the request e.g. if user doesn't specify the -request-proto on the command line, parse the first line of the request file, checking for "HTTP" and default to -request-proto http?