add similarity plot

[jwijffels]

part of the textplot pkg

[jwijffels]

similarity between docs > cluster > highlight most relevant keywords?

[jwijffels]

Something like this:
2D plot with colors the words grouped by topic and hovering over it, showing some documents
https://twitter.com/i/status/1372087850548793344
example at https://rasahq.github.io/whatlies/tutorial/embeddingsets/