Show bottom-out times of the car

[ErlerPhilipp]

The suspension histogram shows the bump stop times. However, some cars seem to bottom out, instead. This is then without touching the bump stops and therefore not shown in the plot.

This happened e.g. with the BMW M3 Competition on a Spain track (tarmac) and led sometimes to crazy snap-oversteer.

The necessary information doesn't seem to appear in the suspension data. Perhaps, if we take the max/min values with an epsilon... Otherwise, we can check if the up-down velocity of the car changes with an impact when the car body hits the ground. However, this is probably hard to detect and noisy.