Proxy support

[0d17837d-20a5-4b3d-a00c-2823a412b0ee]

Hello!

There are a few issues up that request proxy support #220 and #107 I've looked at the code myself and it seems a bit more work is required than just slapping in net.proxy in a few places. I'm more than happy to work on a PR for this if someone could give me some suggestions as to how best implement this.

The major use-case for this would be to scan .onion addresses.

[dadrian]

For what it's worth, I expect this would require a major refactor.

[AnthraX1]

run it under proxychains or . torsocks on?

[mzpqnxow]

run it under proxychains or . torsocks on?

The approach used by proxychains & tsocks (library preloading) won't work as golang doesn't use libc