Use computer vision to annotate observations

[bouteloua]

Further discussion about what an observation is (or should be) can be hosted here:
https://forum.inaturalist.org/t/what-is-an-observation/3367

(though:

@tiwane

I will note, however, that changing something as fundamental as how an observation is defined would likely require a ton of work so odds are slim that this will happen.

)