Add GitHub Action for Sphinx documentation link checking #1

	name: Link Checker for Sphinx Documentation

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	link-check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Cache Python packages
	uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/docs/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Set up Python 3.x
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r docs/requirements.txt
	pip install sphinx-linkcheck

	- name: Run Sphinx linkcheck
	run: \|
	cd docs
	sphinx-build -b linkcheck source _build/linkcheck

	- name: Display and check linkcheck results
	run: \|
	echo "Checking for broken links..."
	cat _build/linkcheck/output.txt
	if grep -q "broken" _build/linkcheck/output.txt; then
	echo "Broken links detected!"
	grep "broken" _build/linkcheck/output.txt
	exit 1
	else
	echo "No broken links found."
	fi

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