Showing asset thumbnails for Collections

[schwehr]

Feature Request: Thumbnail previews would be really nice to show for STAC Collections.

I tried this:

   "assets": {
      "thumbnail": {
         "href": "https://mw1.google.com/ges/dd/images/AAFC_ACI_sample.png",
         "title": "Thumbnail",
         "type": "image/png",
         "roles": ["thumbnail"]
      }
   },

Here: https://storage.googleapis.com/earthengine-stac-experimental/catalog-v016/AAFC_ACI_2.json

That adds an Assets tab with a Thumbnail row:

https://gitter.im/SpatioTemporal-Asset-Catalog/1.0-testing?at=6087a613da3e853b33d64b2d

[m-mohr]

The asset looks valid. I'll take this on and implement it in the next weeks. Should be simple to derive (aka copy&paste) from the Items.

[m-mohr]

Just realized that this is a duplicate of #52