Move current state of the project onto the public main branch

• /src/CNN_model_checks_inputs.py
• /src/CNN_model_data_prep.py
• /src/easy_module.py
• /src/ESREL_code.py
• /src/figure_saving.py
• /src/France_CNN_model_dropout.py
• /src/lifetime_sim_vs_test.py
• /src/maintenance_planning_no_prognostics.py
• /src/maintenance_planning_perfect_prognostics.py
• /src/perfect_vs_imperfect_plots.py