write spatial search to another space

[burritojustice]

A spatial search returns raw GeoJSON. While this can be redirected to geojson.tools using -w, it would also be useful to store this in a space.

We can currently pipe the output like this:

here xyz show ZjInp1qK --spatial --feature GIPnifRY,94110 -r | here xyz upload hcSiDRdT

However, it might more elegant to add an option to send the output to a third space:

here xyz show ZjInp1qK --spatial --feature GIPnifRY,94110 --save hcSiDRdT

or even

here xyz show ZjInp1qK --spatial --feature GIPnifRY,94110,hcSiDRdT

It would also be helpful to a token option for saving in a third party space:

here xyz show ZjInp1qK --spatial --feature GIPnifRY,94110,hcSiDRdT --token aWriteToken