Feature request: Clustered Heatmap

[Zaf4]

Clustered heatmaps are widely used for visualization of multi-dimensional data and it is pretty useful for showing hierarchical relations and the patterns of features among the groups.

It is basically an extension of heatmap (geom_tile) with added dendrograms and group (or cluster) information with colored bars next to the columns or rows to visualize hierarchies and clusters within the dataset.

It is implemented as an extension package (pheatmap) for ggplot2.

e.g. (from https://slowkow.com/notes/pheatmap-tutorial/)

It is also implemented in seaborn (https://seaborn.pydata.org/generated/seaborn.clustermap.html)

It would be great to be able to use it in lets-plot.