Add Support for Defining Rules Without Lambda and the DSL

[Clayton7510]

Rules and Decisions can be very nicely wired up with lambda. But [eventually] there should be support for wiring rules up without lambda and without the DSL (even though, this is very cool :).

What if given(), when() and then() methods could take in Facts, Predicates and Functions, respectively, but also be defined in a Rule class (by the developer)? That might be pretty cool. So, it could be an either/or situation. And thenRules or Decisions could then be added to a Book or mixed with other Rule types.

[Clayton7510]

I think the basic approach will be defining classes that define given, when and then methods. Each of those methods will be injected into a Rule (e.g. default to StandardRule) as the definition of the functional interfaces which can be passed into the when() and then() methods. The given() method will convert the state defined into Facts. Anyway, that's the thought right now.