Automatic Graph Drawing for draw_d3

[mehatamm]

I added a toggle for the draw_d3 function in drawing.py for graphs without qubit/row data provided, so instead of being drawn stacked they are drawn after the application of a force-based algorithm that produces reasonably symmetric and visually pleasing results. This uses the helper function auto_draw_vertex_locs. The algorithm used is the first found in this textbook chapter:
https://cs.brown.edu/people/rtamassi/gdhandbook/chapters/force-directed.pdf

[jvdwetering]

Thanks for the implementation. Can I suggest changing the parameter name to auto_layout instead of auto_draw which I find a bit more ambiguous. Can you also add to the docstring of that function explaining what this parameter does?

[mehatamm]

Thanks for the implementation. Can I suggest changing the parameter name to auto_layout instead of auto_draw which I find a bit more ambiguous. Can you also add to the docstring of that function explaining what this parameter does?

I changed the parameter name to auto_layout and added a docstring to draw_d3. Let me know if there's anything else I should change!