Return final page URL from d.http.Request in gobusterdir

[drwtsn95]

It will be easier to import code from libgobuster without copying it if you add one more return value to func (client *HTTPClient) Request method in libgobuster/http. You can use resp.Request.URL.String() as such value. P.S. i am writing additional functionality for gobusterdir, so i copied it's code, but libgobuster code is intended to be only imported from github.