feat: able to extend adapter specific exporter?

[wey-gu]

Is it reasonable/feasible to make the adapter support certain types of exported formats?

I am thinking of adding support to allow exporting .html file of a NebulaGraph query result(i.e. this), or dot profile file, etc.

This seems to only apply to a specific adapter?

Harlequin is a Great project, thanks so much for creating it!

[tconbeer]

Thanks, this is an interesting idea. Actually the v1 implementation of the exporter required adapter-specific implementations, but most adapter authors weren't implementing export, so I refactored to just use arrow + duckdb, which ship with Harlequin core. I could probably walk things back a bit, and bring back adapter-specific export implementations... I admittedly wasn't thinking about non-tabular data formats, but to be honest there is some work to support the full range of formats and options that we already have access to (e.g., more parquet options).

[wey-gu]

Simplifying the adapter integration surface in this change is highly reasonable. Your abstraction and contribution documentation are elegant and tasteful, making the adapter implementation feel comfortable. Thank you!