Add flake8 linter & fix conflict between isort and black #13

	name: Linter

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	lint:
	runs-on: windows-2022
	steps:
	- name: Checkout code
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	- name: Install dependencies
	run: pip install black isort flake8
	# Different line limits: Black/isort (120), Flake8 (150).
	# Flake8 allows longer lines for better long string readability. Black doesn't enforce string length.
	- name: Run black
	run: black --line-length=120 --check --diff .
	- name: Run flake8
	run: flake8 --max-line-length 150
	- name: Run isort
	run: isort --check --diff --line-length 120 .

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