Add slots and enumerations for `MassSpectrometry`, add `FluidHandling` and `DirectInfusion` classes needed differentiate mass spectrometry categories #42

	# Built from:
	# https://docs.github.com/en/actions/guides/building-and-testing-python
	# https://github.com/snok/install-poetry#workflows-and-tips

	name: Build and test nmdc-schema

	on: [pull_request]

	jobs:
	test:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.10"]

	steps:

	#----------------------------------------------
	# check-out repo and set-up python
	#----------------------------------------------
	- name: Check out repository
	uses: actions/checkout@v2

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	#----------------------------------------------
	# install & configure poetry
	#----------------------------------------------
	- name: Install Poetry
	uses: snok/install-poetry@v1.3

	#----------------------------------------------
	# install dependencies if cache does not exist
	#----------------------------------------------
	- name: Install dependencies
	run: poetry install --no-interaction --no-root

	#----------------------------------------------
	# install your root project, if required
	#----------------------------------------------
	- name: Install library
	run: poetry install --no-interaction

	#----------------------------------------------
	# run test suite
	#----------------------------------------------
	- name: Run tests
	run: make test

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