STEP Files for parts

Please provide the step files for CAD.
Would like to more easily modify [Tool_board_cover_B_x1 PETG.STL](https://github.com/FYSETC/FYSETC-Voron-0.2-Pro/blob/main/0.2%20R1%20V1.1/STL/ADD/Tool_board_cover_B_x1%20PETG.STL)