Change constituent properties parsed from standard name?

[peverwhee]

Description

DISCUSSION SOLICITED
The following constituent properties are currently parsed from the standard name:

1. volume mixing ratio vs mass mixing ratio vs. number_concentration -> parsed from standard name and saved to properties%const_type
2. moist vs wet vs dry -> parsed from standard name and saved to properties%const_water

Alternative options

Do we want a different approach to one or both of these long-term?

• const_type could be determined by units - not necessarily auto-converted
• const_water could be an additional metadata field (like advected); would function the same, but standard name would not include _wrt_dry_air, etc.