Add a script for Metasploit ruby API (Msf::Exploit::Remote::HttpClient)

Making metasploit exploit creation easier would be nice.

Ref: https://github.com/rapid7/metasploit-framework/wiki/How-to-Send-an-HTTP-Request-Using-HTTPClient

It's very good to see a lot of development about this project since I've seen this plug-in at BlackHat Europe at 2015 🤗. Tbh, you and I had talk about msf request function generation at Amsterdam 2015.

Since I usually develop msf module, I've implemented my own extender for this purpose but It would be very nice to have this ability in your plug-in.

Good job and tyvm btw.

I will do some Burp development in July .. I will try to make this feature reality.