Add GitHub action for continuous integration #1

	name: Run CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	test:
	runs-on: ubuntu-24.04

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'

	- name: Install using Poetry
	run: \|
	pip install poetry
	poetry install

	- name: Run tests
	run: \|
	poetry run ruff format --check src
	poetry run ruff check src
	poetry run mypy src
	poetry run muffin --version

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