Add read the docs config file #139

	name: documentation

	on:
	workflow_dispatch:
	push:
	tags:
	- '*'
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install sphinx and related dependencies
	run: sudo apt install -y doxygen && pip install -r docs/requirements.txt
	- name: Build documentation
	# run build twice to fix crossrefs
	run: make -C docs html && make -C docs html
	- uses: actions/upload-artifact@v4
	with:
	path: docs/_build/html/*

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