After SERVER-97465, QueryPlanner::planWithCostBasedRanker access histograms via QueryPlannerParams -> CollectionInfo -> CollectionStatistics and the sampling estimator via a parameter to planWithCostBasedRanker. Neither of these are ideal locations for these parameters.

The tasks for this ticket are:

• Introduce a interface or class EstimatorFactory which has function to construct a HistogramEstimator, SamplingEstimator and HeuristicEstimator (we will add new estimators here in the future). This may require refactoring histogram CE to be a proper class that interacts with the stats catalog rather than have static functions (we can repurpose CollectionStatistics for this purpose).

• Refactor QueryPlanner methods to take EstimatorFactory as parameter. Remove SamplingEstimator and CollectionStats arguments.