Implement chat plugins
Chat plugins are a set of functionalities and data that allows
users to implement in their server additional plugins less related
to the main purpose of the simulator.

The plugins are to be used with chat commands and are tightly
implemented with them. Plugins can be used for games or other
relevant interaction of users with the chat commands.
Implement Scavenger Hunt plugin
The Scavenger Hunt is a game held by admins using the room
'scavengers'. This plugin allows the game to be run automatically.