Add verpy metloader capability to cset_workflow #1933
Description
What problem does your feature request solve?
This is part of the development to implement METPlus objective verification in CSET
Describe the solution you'd like
App to run VerPy's metloader utility to create databases from METPlus apps output
Describe alternatives you've considered
Use of METPlus utilities to organise output and produce plots have been considered and discarded in favour of using VerPy