Integrate non negative omp versions in the experiment pipeline

code/bolsonaro/models/model_factory.py

code/bolsonaro/models/model_parameters.py

code/bolsonaro/models/model_raw_results.py

code/bolsonaro/models/omp_forest.py

code/bolsonaro/trainer.py

code/compute_results.py

code/prepare_models.py

code/train.py