create a graph / image explainer

[mireille-raad]

Currently, on the draft site on https://rustpython.github.io/,

there is this that tries to explain what rustpython is....

I am not sure if this is true.... Is this good enough? if not, can anyone do a visual representation? (you don't need to worry about the visual style for now, you can scribble it and take a pic, i'll figure a way to make it in sketch).