load model from path
Currently, MLAir expects a trained model to be inside the experiment path inside the
model directory. When running a fresh experiment run with no training at all, this will fail as there is no option to refer to an existing model (without copying it into to model directory after initiating the MLAir workflow). Therefore add option to use external model.
model_pathparameter that can be set during
add option to copy the given model inside the experiment path (which should then overwrite the external