End to end tests

These tests use Playwright to simulate a user clicking through the UI of Aleph.

Running locally

1. Install the dependencies from requirements-dev.txt into your virtualenv (make dev in your virtualenv)
2. Run make e2e-local-setup to have playwright install supported browsers
3. Use make e2e-local to run the tests locally. This requires Aleph running locally.
4. Use make e2e to run the tests in a Docker environment. Everything required will be set up before the tests run.
5. You might find playwright codegen useful for generating test code.
6. Debug tests visually using PWDEBUG=1 make e2e-local
7. Setting the BASE_URL allows one to point to a different base URL where Aleph is expected to run.