Online help/introspection for bot commands

[Adrian Perez]

It would be desirable that a bot can introspect itself, and provide online help about the features enabled at run-time. Ideally, this would be by adding a help command. Some help topics would be “fixed” and always available, while others would be provided by plugins:

• help: Displays a short summary on how to list available general help topics, commands, and how to get info for each one of them.
• help topics?: Lists the available general help topics.
• help commands?: Lists the available commands.
• help <topic-name>: Obtains help about a topic.
• help <command-name>: Obtains help about a command.