EvaluationContext and constraints for simplifications

[normen662]

This PR is a direct precursor of enabling a PredicateSimplification rule in the REWRITING phase of planning.

This PR gives all planner rules including

• cascades planner rules
• simplification rules for Values and QueryPredicates
• computation rules for Values and QueryPredicates

the ability to access the current evaluation context and to produce QueryPlanConstraints as part of the result of the rule when yielding.

Yielding has been extended to allow to yield QueryPlanConstraints with the object that is being yielded.

For conciseness and readability I added a fluent-like API for rules to use:

call.yieldResultBuilder()
    .addConstraintsFrom(bindings.get(getMatcher()))
    .addConstraintsFrom(Sets.difference(allMajorOfMinors, retainedMajorOfMinors))
    .yieldResult(simplifiedPredicate);

Note that for the propagation to work, we need to make sure that in each individual rule, objects (i.e. normally in a tree of QueryPredicates or Values) that are not being preserved by the rule need to have their constraints preserved.

Example:

COV(c58) IS NOT NULL AND FV(QOV(q, "x") = Literal(5)

can be simplified to if c58 is bound to 42:

TRUE AND FV(QOV(q, "x") = Literal(5) with constraint that COV(c58) IS NOT NULL which is assigned to TRUE

that can be further simplified to:

FV(QOV(q, "x") = Literal(5) with constraint that COV(c58) IS NOT NULL which now needs to be assigned to the ValuePredicate as TRUE is gone. That means that IdentityRule must preserve the plan constraints that was previously assigned to the TruePredicate.