Update build system to flit_core #284

	name: Check Quality
	on: [pull_request]

	jobs:
	tests:
	runs-on: ubuntu-latest
	name: Checks
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	pip install --upgrade pip setuptools flit
	flit install --extras test
	- name: "Analyse code with black"
	run: black --diff --check sdk_entrepot_gpf tests
	- name: "Analyse code with pylint"
	run: pylint --rcfile=.pylintrc --disable=fixme sdk_entrepot_gpf --recursive=y
	- name: "Analyse tests with pylint"
	run: pylint --rcfile=.pylintrc --disable=fixme tests --recursive=y
	- name: "Analyse code with mypy"
	run: mypy --strict sdk_entrepot_gpf tests
	- name: "Run unit tests"
	run: coverage run -m unittest discover -b -p *TestCase.py

Provide feedback