Add workflow that checks the Qleverfiles #1

	name: Qleverfiles check

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	merge_group:

	jobs:
	format-check:
	runs-on: ${{matrix.os}}
	strategy:
	fail-fast: true
	matrix:
	os: [ubuntu-22.04]

	steps:
	- name: Checkout the repository for the qlever script
	uses: actions/checkout@v3
	with:
	path: qlever-control

	- name: Install dependencies needed for checking
	run: \|
	pip install -e .

	- name: Check that all the files in `src/qlever/Qleverfiles` parse.
	working-directory: ${{github.workspace}}/qlever-control
	run: \|
	for QLEVERFILE in src/qlever/Qleverfiles/Qleverfile.*; do
	NAME=${QLEVERFILE##*.}
	printf "Checking Qleverfile for $NAME ... "
	rm -f Qleverfile
	qlever setup-config $NAME
	qlever get-data --show 2>/dev/null 2>&1
	qlever index --show 2>/dev/null 2>&1
	qlever start --show 2>/dev/null 2>&1
	qlever ui --show 2>/dev/null 2>&1
	echo "OK"
	done

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