Cross Server Support#78

Enable cross-server auctions so that when an auction is created on bungee-server-1, it can be viewed on bungee-server-2 etc, either through bungee’s configuration or MySQL, depending on which option is more convenient.

Yes! Cross-server support would be awesome! Redis could be used so the plugins can communicate together and report to one another for data changes on the database. Also, another way is to create a simple plugin that the user sets up on the proxy (Velocity or Bungee) that allows the plugins to use plugin messaging to inform each other for data changes on the database