guilds status will list the guild names, their ids, and whether or not the
guild is bridged.
guilds bridge <guildID> will bridge the guild with the given ID. If you add the
--entire flag, it will create a portal for each channel on the guild.
guilds unbridge <guildID> will stop bridging the guild with the given ID and
remove all portals for that guild.
Refs #8
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