Add motot of the biqu h2 extruder

[kapoira]

i want to put this motor of the extruder biqu h2, in the motordatabase

[motor_constants bq-35BYGF0713-A-30HZT]
resistance: 2.3
inductance: 0.002
holding_torque: 0.110
max_current: 1.5
steps_per_revolution: 200