nrf5: Adding handling of CTRL+D to reset chip in main.c. Call to NVIC System Reset is issued.
nrf5: Adding handling of CTRL+D to reset chip in main.c. Call to NVIC System Reset is issued.

tralamazza/micropython,adafruit/micropython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,tralamazza/micropython,adafruit/micropython,tralamazza/micropython,tralamazza/micropython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython