Reorder and hide columns within dataset viewer

[davidberenstein1957]

Problem

When doing some basic vibe checks for datasets, I realized that the order in which columns are shown might not always be useful for viewing and exploring the data. I might want to quickly show chosen_model next to chosen_response and chosen_avg_rating and continue exploring based on that. Also, this representation might different based on personal preference and search session.

Related

I noticed an earlier discussion here #2639 (thanks @davanstrien) but it does not fully align with that ideation.

Implementation

I see it more as an on-the-fly UI thing than a configurable Yaml thing (proposed in #2639), similar to re-ordering a tab in a browser. Based on this, I can also see an option to potentially hide useless columns.

Example

Based on UltraFeedback

[severo]

cc @gary149 @krampstudio @julien-c: what do you think?