[POSTER EVAN] improve visualization of the starting years for the poster. some refactorign for the Alps graph and cmap, from now on, we will only remove the last 20 starting years

[NON STATIONARY] fix constant gev params. also some refactoring for the regions, the colors, and functions.

[PAPER1] modify the strength criterion for the hypercube (use the 0.98 quantile and its evolution in 10 years)

[HYPERCUBE VISUALIZATION] modify first starting year for the full parameters. add main starting years to study cluster of starting year for a single altitude for a recent SWE (RSWE). add colormap for display

[COMPARISON] add some labels to the graph. add trend type agreement/classification graph. refactor column name

[SCM][HYPERCUBE] refactor trend types for hypercube visualization. add the difference between real_trend_type & display_trend_type

[SCM][HYPERCUBE] remove run time error and no trend from trend plot. add Altitude_Hypercube_Year_Visualizer as an extension of Altitude_Hypercube_Visualizer

[SCM][HYPERCUBE] refactor trend analysis. use change of point test instead of tren test for the hypercube.

[SCM][HYPERCUBE] Add possibility to create altitude hypercube effortlessly from quantity altitude hypercube (with an additional argument called add_detailed_plot)