Create Treemap visualisation

[blackswanburst]

Create a module using plotly to allow us to visualise treemap style graphs, for logistical budgets. An example graph is here: https://coin360.io/

However, for our purposes we might want to visualise say network components over file components, or using the actor module, time over money for a given threat actor. So keep the treemap code flexible, and usable for 3 dimensions of visualisations.

Stick to the output conventions of png, html, etc as in heamps module.