Suggestion: Option to display input to /eval as well as output

[Next-Door-Tech]

My use case here is a class server for an intro to Python course, so it would be helpful if other students could see the code that was actually run up-front, not just what the output was. Obviously this might not be what everyone using Monty wants as the default behavior, so I'd suggest this be added as a config option.

Here's what the output currently looks like followed with a mockup of what I'm envisioning:

If you wanted to get really fancy with it you could add an extra command argument to /eval to override the default set by /config.