Access ScoreDirectorFactory from a previous solution

I suggest that we have an access to the ScoreDirectorFactory to evaluate the score for an already made solution.

Here is a link to the issue I opened in StackOverflow

https://stackoverflow.com/questions/58271556/how-do-you-get-the-scoredirectorfactory-from-a-previous-solution-in-optaplanner?noredirect=1#comment102910825_58271556

Blocked by https://issues.jboss.org/browse/PLANNER-1630