stm32/mboot: Add support script which can program mboot and application.
stm32/mboot: Add support script which can program mboot and application.

MrSurly/micropython,pfalcon/micropython,selste/micropython,adafruit/circuitpython,henriknelson/micropython,trezor/micropython,MrSurly/micropython,kerneltask/micropython,pramasoul/micropython,henriknelson/micropython,pozetroninc/micropython,henriknelson/micropython,pozetroninc/micropython,pozetroninc/micropython,trezor/micropython,bvernoux/micropython,adafruit/circuitpython,henriknelson/micropython,tobbad/micropython,trezor/micropython,kerneltask/micropython,kerneltask/micropython,pfalcon/micropython,selste/micropython,tobbad/micropython,pramasoul/micropython,henriknelson/micropython,kerneltask/micropython,MrSurly/micropython,trezor/micropython,tobbad/micropython,MrSurly/micropython,selste/micropython,tobbad/micropython,bvernoux/micropython,MrSurly/micropython,bvernoux/micropython,selste/micropython,pozetroninc/micropython,trezor/micropython,pfalcon/micropython,pramasoul/micropython,pramasoul/micropython,pfalcon/micropython,adafruit/circuitpython,bvernoux/micropython,selste/micropython,adafruit/circuitpython,pfalcon/micropython,tobbad/micropython,adafruit/circuitpython,pramasoul/micropython,kerneltask/micropython,bvernoux/micropython,pozetroninc/micropython,adafruit/circuitpython