Option: Allow default methods to be used to provide default values for the configuration

[auriium]

Currently, the @defaultOption annotation is sloppy at best for providing non-primitive default objects for configuration values. I propose the use (or at least the option to use) default methods to return objects as default values. This is supplemented by the fact that customized serializers already exist in DazzleConf and more importantly already support deserialization of objects. The only issue being the use of default methods as helper methods in configuration classes, for which i propose an annotation that would allow a default method to be ignored, or a boolean that controls configuration reading accepting default methods as default values.