incorporate json schema

[vtlim]

things that would change:

• confs2psi.py make_psi_input()
• getPsiResults.py process_psi_out()

esp when needing to parse new data (gradients, hessians, frequencies, etc.)
https://github.com/MolSSI/QC_JSON_Schema

Also see this, from Daniel Smith OFF Slack message
https://www.youtube.com/watch?v=WBEUhfMzsxM