Support reverse shell and bind shell rather than only interactive OS shell

[shelld3v]

Is your feature request related to a problem? Please describe.
Sqlmap should also support reverse shell and bind shell

Describe alternatives you've considered
--reverse-shell and --bind-shell can have a really simple workflow: Automatically add the reverse/bind shell payload (for many languages, separated with &&) to --os-cmd. Then run a TCP server to receive the connection and give the user a command-line interface.

[stamparm]

I don't like over-complicating stuff. You have that basic web-shell and I don't see any crucial benefits in using reverse or bind-shell over it. For everything else you have the --os-pwn which is run by utilizing Metasploit. There you can do the bind or reverse shell. End of story