[REQUEST] allow list of codes in cocostraints "IF" column

[carolinerosin]

Is your feature request related to a problem? Please describe.
some users have a lot of same cocostraints, but associated to multiple OBX-3 codes. They would like to add a list of codes for OBX-3. The list of code would come from a codeset.

Describe the solution you'd like
Add a codeset to an IF column in coconstraints. We need to specify the requirements of this feature (ie what to do with code usage ?). See if there are other potential issues or verification rules to be added.

Describe alternatives you've considered
enter one row per code - but this is tedious in that case, and hard to maintain.

Additional context
requested by APHL