Should `GI.FeatureCollection` subscribe to the Tables interface?

[asinghvi17]

That would make DataFrame(fc) work, which would be incredibly convenient. We currently don't have that so it's very difficult to tell beginner users how to use a GI feature collection.

[rafaqz]

Yes, but maybe Tables.jl should be an extension?

One problem is there is no need to supply all fields in all rows so you have to read the whole thing to get the columns.

We can maybe move my code for that from GeoJSON.jl to here.

[evetion]

+1 For extension, as soon as you load DataFrames that will trigger.