Add support for writing GDAL/OGR formats via pyogrio

[paleolimbot]

In #137 / #283 we added read support for GDAL/OGR formats; however, we don't have write path yet. Briefly, we need to:

• Add support for writing via the ExternalFormatSpec
• Add a wrapper of some kind for writing a RecordBatchReader via pyogrio (I am not sure exactly how this is supported there and might need an upstream contribution)