MOE: add statistics/moe_best_worst_statistics.py

[ZvikaZ]

Add statistics for Multi Objective.

Example output for https://github.com/EC-KitY/EC-KitY/blob/main/examples/multi_objective/moe_base_test/nsga2_basic_test.py

generation #0
subpopulation #0 has 13 fronts
first front has 7 individuals (4.7%)
first front's corners: [[0.2989868751811672, 0.9942669080269566], [0.9979792887603128, 0.2913079362067279]]
last front's corners: [[0.9999999998065303, 0.9999511451036442]]

generation #1
subpopulation #0 has 9 fronts
first front has 10 individuals (6.7%)
first front's corners: [[0.2989868751811672, 0.9942669080269566], [0.9979792887603128, 0.2913079362067279]]
last front's corners: [[0.9876650190502128, 0.9999998747450082], [0.9999999956081566, 0.9982244617821258]]

...

generation #149
subpopulation #0 has 1 fronts
first front has 150 individuals (100.0%)
first front's corners: [[0.9781783045959546, 0.04996157982728866], [0.02597148240068925, 0.9854420771482161]]
last front's corners: [[0.9781783045959546, 0.04996157982728866], [0.02597148240068925, 0.9854420771482161]]

[itaitzruia4]

This file should be located in the moe folder, not in statistics