[Idea]: Add support for servers that have their bukkit.yml located elsewhere.

[RealTriassic]

Describe the feature

Currently, if you try to re-locate the bukkit.yml file to let's say, a folder called "config", Multiverse-Core will send out a warning in console:

[05:55:04] [Server thread/WARN]: [Multiverse-Core] Could not read 'bukkit.yml'. Any Default worldgenerators will not be loaded!

It expects bukkit.yml to be located in the main directory of the server instead of checking if bukkit.yml has been relocated using the --bukkit-settings=config/bukkit.yml Java flag. It would be great if it could check if bukkit.yml has been re-located and if it has, then use the new location.

How is the feature useful to all Multiverse users?

This would let servers keep all of their server software configuration files in one folder (usually named config) without sacrificing the loading of default world generators located in the bukkit.yml file.

Agreements

• I have searched for and ensured there isn't already an open issue regarding this.