Allow selection of multiple datasets in the left panel for batch hiding, highlighting/focusing.

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Description

Managing datasets/nodes one by one in the left panel is cumbersome, especially when working with a large number of datasets. To quickly analyze node dependencies, it would be useful to select multiple datasets at once to hide/unhide them or highlight/focus on them in batch.

Context

This feature would save time and effort when working with many datasets, allowing users to focus on specific groups or hide irrelevant ones quickly. It can benefit users who are managing complex data pipelines, improving usability and efficiency.

Possible Implementation

Consider adding a multi-select feature, something like using shift/ctrl + click to select several datasets, followed by bulk action options like hide, unhide, or highlight.

Checklist

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