Command response output formatting options are very limited

[Matt Titmus]

Currently, the output of executed is just dumped into a fixed-width code box in the chat. We need something better.

Command response formatting should include:

• The ability to embed formatting directives in command output.
• Defaults to fixed width (current format)
• Cog used “Greenbar” templates (here and here)
• We’d more likely allow output to be embedded in command responses
• Maybe we can support “themes” that are defined outside of the command output to handle un-formatted output?