Feature request: `order` kwarg for `size`

[asinghvi17]

It would be nice if this worked:

resolution = size(earth_ras; order = (X, Y))

instead, we currently have to do:

resolution = length.(dims(earth_ras, (X, Y)))

and order seems to be a standard kwarg in DimPoints etc.

[rafaqz]

Yes that seems nice. I guess axes and maybe a few other methods will need it too to be consistent

[rafaqz]

Probably it would just be size(earth_ras, (X, Y)) as size(A, X) already works. I think we don't have it because Base doesn't have size(A, (1, 3)).