Modified Cover for Tuya Wall Thermostat

Added a back plate that attaches to a standard US junction box. The back plate covers the rest of the junction box, so the whole thing lays flat against the wall. Prints in one piece. 3mf file already has supports and slicing. If you print from the stl file, enable supports- there is a small overhang on the inside of the box that needs supported during printing. I used automatic support generation and it worked fine. I printed on a Bambu A1 mini with black PLA.