Random User-Agent + Proxy support

[ServerRaider]

Maybe implement a function like --random-agent to get a random User-Agent on evry new request.
Also you can implement use of proxy-servers (socks4,socks5,http) to avoid problems with IDS like CloudFlare and whatever.

[the-c0d3r]

@ServerRaider Thanks for the suggestion.

Random user-agent on every request might make it slower. Currently it is only getting a random user-agent and using the same agent on all the requests.
As for the proxy, I can implement it inside, but there is another simpler way, using linux env vars.

export HTTP_PROXY=10.10.1.10:3128
export HTTPS_PROXY=10.10.1.11:1080

Export those variables before executing the code and it should use the proxy.
I will consider adding those two features into the code. Thanks again.