Add Interpretation Methods to the Core API

[popescu-v]

In Khiops v11 a set of prediction interpretation features has been added, namely (see KhiopsML/khiops#223 (comment)) :

• instance-based interpretation of scores
• exact computation of Shapley values
• creation of an intepretation dictionary, to deploy interpretation values
• creation of a reinforcement dictionary, to deploy reinforcement scores, based on lever variabled

New API methods need to be added for these features.

[popescu-v]

It suffices to add a build_interpretor function which takes a path to a prediction model kdic file as input and outputs an intepretation model kdic file. This intepretation model file can be used with deploy_model as any other non-coclustering model (classifier, regressor, encoder).