Add pyproject.toml, trusted publishing, dependabot #1

	name: Build and publish to PyPI
	on: push
	jobs:
	build:
	name: Build distribution
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3"
	- name: Install "build"
	run: \|
	python -m pip install build
	- name: Build a binary wheel and a source tarball
	run: python3 -m build
	- name: Store the distribution packages
	uses: actions/upload-artifact@v4
	with:
	name: dist
	path: dist
	publish:
	name: Upload release to PyPI
	if: startsWith(github.ref, 'refs/tags/')
	needs:
	- build
	runs-on: ubuntu-latest
	environment:
	name: pypi
	url: https://pypi.org/p/pa-ringbuffer
	permissions:
	id-token: write
	steps:
	- name: Get the artifacts
	uses: actions/download-artifact@v4
	with:
	name: dist
	path: dist
	- name: Publish package distributions to PyPI
	uses: pypa/gh-action-pypi-publish@release/v1
	with:
	print-hash: true

Provide feedback