[EXTREME ESTIMATOR][MAX STABLE] add argument use_rmaxstab_with_2_coordinates to rmaxstab that makes it possible to sample dataset with 3D coordinates

[TEST][DATASET] major fix for abstract_dataset for the function transform_maxima in the spatio temporal case

[MAX STABLE MODEL] add fitmaxstab for 1D coordinates (by building 2D coordinates from the 1D coordinates)