Implement a function to estimate the overlap of two height definitions
In the Finalizer processes, as planned for the 24.07 release, we will adjust the number of stories of possible building classes based on the number of stories of the building (as observed from OSM or GHSL). Therefore, we need to implement a function that determines the (range of) overlap between the number of stories or range thereof between the building class and the building. Because this function will use the taxonomy data directly, it is best implemented as a member function of taxonomy-lib.