[Discord] Command to show token » role rules

[mikedotexe]

The epic in #8 covers add new token roles, but admins may want to be reminded of the rules set up.

This ticket is to create a slash command that displays all the rules for this Discord guild. It will be pulling information from the database.

Let's attempt to have this display in a table or something with a leading index. This way we can allow them to refer to particular roles they may want to edit or remove.