Bart Gips

Tap positions are integer numbers clamped between `tap_min_` and `tap_max_`. The tap position is used to calculate the transformer ratio `k` using the equations [here on line 159](https://github.com/PowerGridModel/power-grid-model/blob/main/power_grid_model_c/power_grid_model/include/power_grid_model/component/transformer.hpp#L159) These equations...