CMake

Update actions/checkout action to v6 #44

	name: CMake

	on: [push, pull_request, fork]

	env:
	# Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
	BUILD_TYPE: Release

	jobs:
	build:
	runs-on: ${{matrix.os}}
	strategy:
	fail-fast: false
	matrix:
	include:
	- os: ubuntu-22.04
	- os: windows-latest
	- os: macos-latest
	steps:
	- uses: actions/checkout@v6
	- name: Checkout submodules
	run: git submodule update --init --recursive

	- name: Create Build Environment
	run: cmake -E make_directory build

	- name: Configure CMake
	working-directory: build
	run: cmake .. -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}

	- name: Build
	working-directory: build
	run: cmake --build . --config ${{env.BUILD_TYPE}}

	- name: Test
	working-directory: build
	run: \|
	ctest -C ${{env.BUILD_TYPE}} --output-on-failure
	git diff --exit-code

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