[NXT - help wanted]: Implement GPIO driver #2428
Description
Is your feature request related to a problem? Please describe.
We don't have a GPIO driver for NXT yet. This is needed to support sensors.
Describe the solution you'd like
A file called gpio_nxt.c similar to gpio_stm32f0.c but with an implementation for NXT.
Additional context
Inspiration can be found throughout here, but the goal is to have something plain and minimal like the example referenced above.