[epic] Create a scatterplot UI using dimensional reduction to visualize text chunks and clusters

[triathematician]

• [ ] Scatterplot UI
  • [ ] [feat] Create an interface for performing dimensional reductions on embeddings
  • [ ] [feat] Create a scatterplot view of selected text chunks that can be colored by clusters
  • [ ] [feat] In scatterplot view, enable users to search and highlight found chunks