Mount for BIQU H2 to Longer LK4/Alfawise U30 (Pro)

Tested and working.

For model of carriage thanks for @hadolfov:
https://www.printables.com/model/271037-longer-lk4-alfawise-u30-carriage

Models of funduct I recommend from Dmitry Sorkin: 

https://k3d.tech/ehp/releases/