add docs for some plots, include sample plots

.../_source/_plots/conditional_quantiles_cali-ref_plot-1.png

.../_source/_plots/conditional_quantiles_cali-ref_plot-2.png

.../_source/_plots/conditional_quantiles_cali-ref_plot-3.png

.../_source/_plots/conditional_quantiles_like-bas_plot-1.png

.../_source/_plots/conditional_quantiles_like-bas_plot-2.png

.../_source/_plots/conditional_quantiles_like-bas_plot-3.png

docs/_source/_plots/data_availability.png

docs/_source/_plots/data_availability_combined.png

docs/_source/_plots/data_availability_summary.png

docs/_source/_plots/monthly_summary_box_plot.png

docs/_source/_plots/skill_score_bootstrap.png

docs/_source/_plots/skill_score_clim_CNN.png

docs/_source/_plots/skill_score_clim_all_terms_CNN.png

docs/_source/_plots/skill_score_competitive.png

docs/_source/_plots/station_map.png

.../_plots/testrun_network_daily_history_learning_rate-1.png

docs/_source/_plots/testrun_network_daily_history_loss-1.png

...ource/_plots/testrun_network_daily_history_main_mse-1.png

docs/_source/conf.py

src/model_modules/model_class.py