Add an observation field type that resolves to the community ID of a related observation

[tony_wills]

Yes, the functionality that @kueda describes (https://forum.inaturalist.org/t/add-interactions-to-species-pages/433/2) is what we are talking about, but that feature request subject is not about this particular idea.

So this is an official request for:

@kueda

What we’d like to do is to make a new feature for interactions where an interaction is a relationship between two observations with clear and controlled semantics (to the extent that that’s possible). So instead adding an obs field that says an obs of an oak represents that oak eating a human, you would create an interaction and have to choose two observations, one of an oak and another of a human, and choose “eating” from a menu of interaction types where “eating” means “taxon A is putting all or part of taxon B inside its body for the purpose of personal metabolism” or something. Other users could then vote on whether that was the correct interaction type, and the two observations could be independently identified.