fix: CMake package and pkgconfig rework #1404

	name: Build
	on:
	push:
	branches:
	- main
	- v*
	tags:
	- "*"
	pull_request:

	jobs:
	single-header:
	name: Single header
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: true

	- uses: actions/setup-python@v4
	with:
	python-version: "3.x"

	- name: Prepare CMake config
	run: cmake -S . -B build -DCLI11_SINGLE_FILE=ON

	- name: Make package
	run: cmake --build build --target package_source

	- name: Copy source packages
	run: \|
	mkdir -p CLI11-Source
	cp build/CLI11--Source. CLI11-Source
	cp build/CLI11--Source. .

	- name: Make header
	run: cmake --build build --target CLI11-generate-single-file

	- name: Copy file to main folder
	run: cp build/include/CLI11.hpp CLI11.hpp

	- uses: actions/upload-artifact@v3
	with:
	name: CLI11.hpp
	path: CLI11.hpp

	- uses: actions/upload-artifact@v3
	with:
	name: CLI11-Source
	path: CLI11-Source

	- name: Release
	uses: softprops/action-gh-release@v1
	if: startsWith(github.ref, 'refs/tags/')
	with:
	files: \|
	CLI11.hpp
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Provide feedback