Add basic ml MicroPython module and example ML4F model to run. #2

	name: Build MicroPython + module

	on:
	push:
	branches: '*'
	pull_request:
	branches: '*'

	jobs:
	build:
	strategy:
	matrix:
	# macos-13 is x86_64, and macos-14 is arm64
	os: [ubuntu-22.04, macos-13, macos-14]
	fail-fast: false
	runs-on: ${{ matrix.os }}
	name: build.py ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	- uses: actions/setup-python@v5
	with:
	python-version: '3.11'
	- uses: carlosperate/arm-none-eabi-gcc-action@v1
	with:
	release: 10.3-2021.10
	- name: Install CMake v3.22 via PyPI
	run: python -m pip install cmake==3.28.3
	- name: Check Versions
	run: \|
	arm-none-eabi-gcc --version
	cmake --version
	python --version
	uname -a
	- name: Initialise micro:bit MicroPython submodules
	run: git -C micropython-microbit-v2 submodule update --init
	- name: Build mpy-cross
	run: make -C micropython-microbit-v2/lib/micropython/mpy-cross -j2
	- name: Build MicroPython with C++ module
	run: make -C micropython-microbit-v2/src USER_C_MODULES=../../.. -j2
	- name: Upload hex file
	uses: actions/upload-artifact@v4
	with:
	name: MICROBIT-MICROPYTHON-${{ github.sha }}-${{ matrix.os }}.hex
	path: micropython-microbit-v2/src/build/MICROBIT.hex

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