STspin32G4 support

Now the POGO´s are 4pin style, like its customary. 3.3V, DIO, CLK, GND in that order. SWO and NRST can be connected if needed for some reason, like debugging.

Ive included the RX/TX pins, although I am not entirely sure how to use them. Seeing they are on pins 13/14 on the 14pin 1.27mm pitch ST-link connector, it would be foolish not to integrate them I agree @runger