chore: add basic project setup & CI #4

	name: Continuous Integration

	on:
	pull_request:

	jobs:
	quality-checks:
	runs-on: ubuntu
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.8

	- name: Install and configure Poetry
	uses: snok/install-poetry@v1
	with:
	version: 1.6.1
	in-project: true
	prefer-active-python: true

	- name: Install Python dependencies
	run: \|
	just poetry-install

	- name: Run style & code checks
	run: \|
	just check

	unit-tests:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	python: [ 3.8, 3.9, "3.10", "3.11" ]
	os: [ ubuntu-latest, macos-latest, windows-latest ]
	defaults:
	run:
	shell: bash

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python v${{ matrix.python }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}

	- name: Install and configure Poetry
	uses: snok/install-poetry@v1
	with:
	version: 1.6.1
	virtualenvs-create: true
	virtualenvs-in-project: true

	- name: Install Python dependencies
	run: \|
	just poetry-install

	- name: Run unit-tests
	run: \|
	source $VENV # see https://github.com/snok/install-poetry#running-on-windows
	just unit-tests

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