Add codspeed #4

	name: codspeed-benchmarks

	on:
	push:
	branches:
	- "master"
	pull_request:
	# `workflow_dispatch` allows CodSpeed to trigger backtest
	# performance analysis in order to generate initial data.
	workflow_dispatch:

	jobs:
	benchmarks:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v3
	with:
	python-version: "3.11"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest pytest-cov pytest-codspeed
	# Install "cmake", "cython" for networkit. Must happen first:
	pip install --upgrade cmake cython
	pip install -e ".[sql,networkit,igraph]"

	- name: Run benchmarks
	uses: CodSpeedHQ/action@v2
	with:
	token: ${{ secrets.CODSPEED_TOKEN }}
	run: pytest . --codspeed

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