Add `has_direct_output` slot to `Activity` class #10

	# Built from:
	# https://docs.github.com/en/actions/guides/building-and-testing-python
	---
	name: Build and test gocam

	on: [pull_request]

	jobs:
	test:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.12"]

	steps:
	- uses: actions/checkout@v4

	- name: Install Poetry
	run: pipx install poetry

	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'poetry'

	- name: Install dependencies
	run: poetry install

	- name: Run test suite
	run: make test

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