Add thumbnail urls for iNaturalist

[rwidom]

Current Situation

The image store does not save thumbnail urls, so we aren't calculating them for iNaturalist photos, but we could.

Suggested Improvement

Once we decide where and how to store and use the thumbnail urls, let's add them.

f"https://inaturalist-open-data.s3.amazonaws.com/photos/{photo_id}/thumb.{extension}"

Benefit

My understanding is that the API (or the front end?) will still need to create our own thumbnails for consistency, but using a smaller file to do so, could improve performance.

Implementation

• 🙋 I would be interested in implementing this feature.