AdvancedServerList

This update adds a new Event called PostServerListSetEvent to the plugin. Its main purpose is to allow other plugins to know when AdvancedServerList is "done" with updating the Server List.
It also provides a Getter to retrieve the ProfileEntry that was used during the PingEvent. Do note tho that said ProfileEntry is not a representation of the final server list content, but just what has been used during the PingEvent. It can also be null, should the PingEvent handling get cancelled.