QB1 blank face plate

QB1 is a rapid prototyping system for ESPHome and ESP32. This is a blank plate that can be used to cover any windows that are not used for sensors, other peripherals, mounting plates, etc. A complete QB1 enclosure requires a top piece, a bottom piece, and a peripheral/mounting/blank plate for each cube face. All enclosure pieces are listed in the QB1 collection. For more information about QB1, see the project page on GitHub.