Converting non-flattened parameter arrays

[odunbar]

We should add some ParameterDistribution functions that are based on the provided method batch to help clean up/convert outputs.

At the end of EKP we are often returned a N_ens x total_param_dimensions-array (or similar).
However sometimes we may need the following forms

• a dictionary Dict(param_1_name => Array(N_ens x param_1_dimensions), ... )
• an N_ens-array of dictionaries [Dict(param_1_name => Array(param_1_dimensions), ... ), ...]

The core of these methods is the slicing of the array back into parameter-sized chunks, but this is exactly what batch provides