Install "Maqueen Robot" BrainPad extension

This is my version of a short program using “sonar” with the Maqueen Bot and the GHI extension in MakeCode. This “share link” should automatically install that extension without having to go to Github and find it. My logic may not be right but the program does seem to work with my Micro:bit in the Maqueen robot car. It avoids obstacles (most of the time) and goes slow enough that you can see what is going on as it backs up and turns.