doc: add configuration file for Read the Docs #25

# to view logs

	name: Run tox

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	run-tox:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ["3.9", "3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v3
	- name: Setup Python
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python }}
	- name: Install tox and any other packages
	run: pip install tox
	- name: Run tox
	run: tox

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