Add composer.json for compatibility with PIE #466

	name: Build and test on Linux

	on:
	push:
	branches: [ main ]
	pull_request:
	release:
	types: [ created ]

	jobs:
	tests:
	runs-on: ubuntu-latest
	name: Build and test
	strategy:
	fail-fast: false
	matrix:
	php: [ "8.0", "8.1", "8.2", "8.3", "8.4" ]
	use-opcache: [ "true", "false" ]

	steps:
	- name: Checkout jsonpath
	uses: actions/checkout@v4

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: "${{ matrix.php }}"
	coverage: none
	tools: pecl

	- name: Compile jsonpath
	run: ./.build-scripts/compile.sh

	- name: Find PHP
	run: \|
	TEST_PHP_EXECUTABLE=`make findphp`
	echo "Found PHP in: $TEST_PHP_EXECUTABLE"
	echo "TEST_PHP_EXECUTABLE=$TEST_PHP_EXECUTABLE" >> $GITHUB_ENV

	- name: Define PHP arguments
	run: \|
	TEST_PHP_ARGS="-n"
	[[ "${{ matrix.use-opcache }}" != "true" ]] \|\| TEST_PHP_ARGS="$TEST_PHP_ARGS -d zend_extension=opcache.so -d opcache.enable=1 -d opcache.enable_cli=1"
	TEST_PHP_ARGS="$TEST_PHP_ARGS -d extension=$PWD/modules/jsonpath.so"
	echo "Test PHP arguments: $TEST_PHP_ARGS"
	echo "TEST_PHP_ARGS=$TEST_PHP_ARGS" >> $GITHUB_ENV

	- name: Run jsonpath tests
	run: \|
	$TEST_PHP_EXECUTABLE $TEST_PHP_ARGS -v
	$TEST_PHP_EXECUTABLE -n run-tests.php -q -x --show-diff

	- name: Show errors
	if: ${{ failure() }}
	run: ./.build-scripts/show-errors.sh

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