visualisation: ability to isolate one category

[Kalyan Dutia]

like this: https://xiaozhah.github.io/Visualization-of-Unit-Embeddings/UnitNet%20decoder/

Clicking currently brings up the attribute pane, so we might need to find another way to trigger the isolation.

• d3 has a dblclick event. We might have to create a new d3fc component to track this