connect: add history command feature

[xelavopelk]

The user can view the history of executed commands in the tt connect tool by using the "\history" command. The maximum number of commands displayed is 10.
Samples:

127.0.0.1:3301> \help
...
  \shortcuts                      -- show available hotkeys and shortcuts
  \history                        -- show history of executed commands
  \quit, \q                       -- quit from the console