Cleaned up examples code #551

	name: CI
	on: [pull_request, push]
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.12"]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	if [ -f requirements_dev.txt ]; then pip install -r requirements_dev.txt; fi
	- name: Check spelling
	run: \|
	codespell --ignore-words-list="ect,ether,nd,tha" --quiet-level=2 $(find pytcp -name '*.py')
	codespell --ignore-words-list="ect,ether,nd,tha" --quiet-level=2 $(find examples -name '*.py')
	codespell --ignore-words-list="ect,ether,nd,tha" --quiet-level=2 $(find tests -name '*.py')
	- name: Sort includes
	run: \|
	isort -c --line-length 80 --profile black $(find pytcp -name '*.py')
	isort -c --line-length 80 --profile black $(find examples -name '*.py')
	isort -c --line-length 80 --profile black $(find tests -name '*.py')
	- name: Format code
	run: \|
	black --check $(find pytcp -name '*.py')
	black --check $(find examples -name '*.py')
	black --check $(find tests -name '*.py')
	- name: Lint
	run: \|
	flake8 $(find pytcp -name '*.py')
	flake8 $(find examples -name '*.py')
	flake8 $(find tests -name '*.py')
	- name: Type check
	run: \|
	mypy -p pytcp
	mypy -p examples
	mypy -p tests
	- name: Test unit
	run: testslide $(find 'tests/unit' -name '*.py')
	- name: Test integration
	run: testslide $(find 'tests/integration' -name '*.py')

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