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docs: rewrite README with English on top, expanded usage, and badges #6

	name: CI

	on:
	push:
	pull_request:

	jobs:
	lint-and-build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.8', '3.10', '3.12']
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install tooling
	run: python -m pip install --upgrade pip flake8 build
	- name: flake8
	run: flake8 colcon_live_tools
	- name: Build sdist and wheel
	run: python -m build
	- name: Install colcon-core + this package and smoke-test the verbs
	run: \|
	python -m pip install colcon-core
	python -m pip install dist/*.whl
	colcon --help \| grep -E "lbuild\|lclean"