Add supported types of authentication option

[alexyorke]

Let the developer choose which services that they want to use when authenticating a player. For example, the service may not support Kongregate authentication so why bother using that filter if it's not required.

Cons:

• PlayerIO may natively support all types, so giving the developer's an option would be unnecessary
• May make Rabbit too complicated

Pros:

• Allows for more specific error messages (sorry, Kong auth is not supported)
• In some cases could fix the output to a higher degree if another filter is not being used if one does arise.