Add macro for filesystem. #30

	name: clang-format, build and run
	on: [push]
	jobs:
	Explore-GitHub-Actions:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository code
	uses: actions/checkout@v4
	- run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
	- run: echo "🖥️ The workflow is now ready to test your code on the runner."
	- name: Install clang-format-18
	run: \|
	sudo apt update
	sudo apt install pipx
	pipx ensurepath
	pipx install clang-format
	- name: Run clang-format h, cpp and hpp files
	run: find . -iname '.h' -o -iname '.cpp' -o -iname '*.hpp' \| xargs clang-format --dry-run -Werror
	- name: Build
	run: \|
	cd src
	g++ \
	.cpp tinyxml/.cpp \
	-o transfil_N \
	-g -I. -I./tinyxml \
	$(gsl-config --libs) \
	$(gsl-config --cflags) \
	-lstdc++fs \
	-Wall -O3 -std=c++11
	- name: Run test
	run: \|
	cd src
	mkdir ../sample_results
	./transfil\_N -s ../sample_inputs/scenario.xml -n ../sample_inputs/population_distribution.csv -p ../sample_inputs/random_parameters.txt -r 2 -t 1 -o ../sample_results

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