Implementation of FTP protocol

[Patryk Kubiak]

Task reason

FTP server and client shares functionality and definitions that should be stored in one place to prevent duplication.

General Description

FTP protocol should be implemented objectivily in core space as network protocol in net/protocols/ftp/. It has to have full functionality required by FTP clients and FTP server. All FTP information should be kept in FTP server object and FTP client object. The library shall also allow for enabling debug logs with full trace of the flow.

Required Interface

// Interface to be implemented