Computes forest in-sample honest weights for a morf.forest object relative to the m-th class.
forest_weights_fitted_cpp(
  leaf_IDs_train_list,
  leaf_IDs_honest_list,
  leaf_size_honest_list
)List of size n.trees, storing the leaf of each tree where training units fall into.
List of size n.trees, storing the leaf of each tree where honest units fall into.
List of size n.trees, storing the size of the leaves of each tree computed with honest units.