pamoja-gpio 0.1.17

On-board bus addressing and pin logic for pamoja: I2C 7-bit and 10-bit address-frame encoding (NXP UM10204) with reserved-range checks, the four SPI clock modes from CPOL/CPHA, and a GPIO pin model with active-high/active-low logical levels, no_std and allocation-free. The addressing-and-mode half ahead of the GPIO/I2C/SPI driver.