Add a `repeat` command

[matdombrock]

It can be useful to have the bot repeat what it just said. This can come in handy when you decide you want to pipe or save the last input.

This can already be done with the command:

sllm hist -v 1 > someFile.txt

But this is a little clunky and also includes the dialog stuff. Not ideal.

[matdombrock]

Closing

This has been added