A convenience function for horizontally stacking results pre- and post- characterization

Used in the notebooks

Used in the tutorials


fidelities_df_0 A dataframe (before fitting), likely resulting from benchmark_2q_xeb_fidelities.
characterization_result The result of running a characterization. This contains the second fidelities dataframe as well as the new parameters.

A joined dataframe with original column names suffixed by "_0" and characterized column names suffixed by "_c".