readme: Add initial readme file #1

	name: "C++/CMake Format"

	on: [push, pull_request]

	jobs:
	format:
	name: "clang-format/cmake-format"
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v3
	- name: Install dependencies
	run: \|
	sudo apt-get update -y
	sudo apt-get -y --no-install-recommends install \
	clang-format='1:14.*' \
	cmake-format='0.6.*'
	# Check all source and header C++ files; ignore files in hidden directories
	- name: Execute clang-format
	run: find . \( -path '/.' -prune \) -o
	\( -type f -a \( -iname '.cpp' -o -iname '.h' \) \)
	-exec echo "Format checking '{}'..." \;
	-exec clang-format --dry-run --Werror --Wno-error=unknown {} +
	# Check all cmake files; ignore files in hidden directories
	- name: Execute cmake-format
	run: find . \( -path '/.' -prune \) -o
	\( -type f -a -name 'CMakeLists.txt' \)
	-exec echo "Format checking '{}'..." \;
	-exec cmake-format --check -- {} +

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