Enabling Ruff as code linter #159

	# This code is a Qiskit project.
	#
	# (C) Copyright IBM 2024.
	#
	# This code is licensed under the Apache License, Version 2.0. You may
	# obtain a copy of this license in the LICENSE file in the root directory
	# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
	#
	# Any modifications or derivative works of this code must retain this
	# copyright notice, and modified files need to carry a notice indicating
	# that they have been altered from the originals.

	name: CI Pipeline

	on: [pull_request]

	jobs:
	run-lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.11"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r ./requirements-dev.txt

	- name: Run lint
	run: \|
	#check pycodestyle and isort https://docs.astral.sh/ruff/linter/#rule-selection
	python -m ruff check
	- name: Build documentation
	uses: ./.github/actions/build-docs

	run-tests:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	python-version: [3.11, 3.8]

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r ./requirements-dev.txt

	- name: Run tests
	env:
	QISKIT_IBM_TOKEN: ${{ secrets.QISKIT_IBM_TOKEN }}
	run: \|
	python -m pytest .

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