Allow changing embedding of rows/columns into bar charts within heatmap

[thomcsmits]

Current scenario:

• A user can click on a row. This will then populate a second plot with a bar chart of this data. A user can click a column. This will give the column in the second plot a different color.

Desired scenario:

• A user can change the embedding with a checkbox on the right and within the context menu.
• Once a user clicks this, the row becomes bigger, and the color tiles are changed into a bar chart, where the data is encoded by the height of the bars. Color of these could either be black or same color as the tiles (as long as there is a black outline). A new y-axis for this bar chart is added on the side.

Up for question:

• Should a user be able to do this for both rows and columns? At the same time? Or only at different times (e.g. when someone selects a column, then all the rows are reverted back to the heatmap)