move zeta into sneut struct #130

	name: test_neutrinos

	on: [pull_request]
	jobs:
	test_neutrinos:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Get AMReX
	run: \|
	mkdir external
	cd external
	git clone https://github.com/AMReX-Codes/amrex.git
	cd amrex
	git checkout development
	echo 'AMREX_HOME=$(GITHUB_WORKSPACE)/external/amrex' >> $GITHUB_ENV
	echo $AMREX_HOME
	if [[ -n "${AMREX_HOME}" ]]; then exit 1; fi
	cd ../..

	- name: Install dependencies
	run: \|
	sudo apt-get update -y -qq
	sudo apt-get -qq -y install curl cmake jq clang g++>=9.3.0

	- name: Build the fextrema tool
	run: \|
	cd external/amrex/Tools/Plotfile
	make programs=fextrema -j 2

	- name: Compile
	run: \|
	cd unit_test/test_neutrino_cooling
	make realclean
	make -j 4

	- name: Run test_neutrino_cooling
	run: \|
	cd unit_test/test_neutrino_cooling
	./main3d.gnu.ex inputs
	../../external/amrex/Tools/Plotfile/fextrema.gnu.ex test_sneut5 > test.out

	- name: Compare to stored output
	run: \|
	cd unit_test/test_neutrino_cooling
	diff test.out ci-benchmarks/test_sneut5.out

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