FasterRouteMarkerCalculator

This class processes list of routes:

• The first route in the list is considered as the main routes

• All other routes are considered as alternatives

• For each alternative it tries to extract a sequence of points that are different from the main route using pointDifferenceFinder

• If there is different subsequence it combines it with the center point of that segment, that alternative and difference between the main route's duration and the alternative route's into FasterRouteMetadata