Feature Request: Minimum fan spool-up time

[ganzgustav22]

I have recently been testing with a powerful vacuum fan for CPAP cooling. It works fine, there is just one issue: When suddenly increasing fan speed in large amounts, like going from 30% to 100% or so, the motor/ESC seems to cause short high-current spikes which make the PSU shutdown. The fan pulls ~110W on full power, however, a 250W PSU shuts down when increasing fan percentage in large steps.

This could be solved I think if one could configure a minimum fan spool-up time in Danger Klipper, for example, when a min spool-up time of 1 second is set in the config, and a gcode command makes the fan go from 30% to 100%, it will actually slowly increase the fanspeed PWM over a time of 0.7 seconds instead of instantly setting 100%.