feat: add `DatabaseEmitter` implementation class #28

	name: Tests

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	run-tests:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository
	uses: actions/checkout@main
	with:
	ref: main
	fetch-depth: 0

	- name: Set up Python
	uses: actions/setup-python@main
	with:
	python-version: 3.x

	- name: Install project and dependencies
	run: pip install .

	- name: Install additional dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install nbconvert pytest pytest-cov

	- name: Test with pytest
	run: \|
	pytest --cov=process_bigraph

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