build(micropython): Integrate upy into meson build system

hw-tests/meson.build

hw-tests/upy-minimal/.gdbinit

hw-tests/upy-minimal/main.c

hw-tests/upy-minimal/meson.build

hw-tests/upy-minimal/mpconfigport.h

hw-tests/upy-minimal/mphalport.h

hw-tests/upy-minimal/systick.c

hw-tests/upy-minimal/uart.c

lib/meson.build

lib/micropython/gen-modules.py

lib/micropython/gen-qstr.sh

lib/micropython/gen-version.sh

lib/micropython/meson.build