Consider switching from Selenium to Playwright for UI tests

Playwright is a new hotness for browser UI testing from Microsoft. It supposedly promises a couple of exciting things.

1. Generally faster execution
2. Native support for all major browsers
3. [Good documentation](https://playwright.dev/)
4. [Test generator](https://playwright.dev/docs/codegen-intro) (this one is :exploding_head: )
5. [pytest integration](https://playwright.dev/python/docs/test-runners)
6. Tools for debugging failed tests https://playwright.dev/docs/trace-viewer-intro

I plan to try it out in my app and report back here.

Edit: blog post about how to get started with playwright and pytest https://til.simonwillison.net/pytest/playwright-pytest