options to choose the type of Encryption

[Alex220]

Please add options to choose the type of simple Encoding/Encryption Between Tunna-client and Tunna-server; same as base64, AES, XOR, zip And NONE (Currently Zip is supported in the Tunna)

[nvssks]

I think I will add support for encoding or XOR'ing when I get some time.

Encryption is in my todo list but this will take some time.