PoC for PlayWright and Page Objects

Page under tests: https://bwilczek.github.io/watir_pump_tutorial/todo_lists.html

# linter
yarn run lint

# unit tests with jest
yarn run test

# e2e tests with playwright
yarn run test:e2e

# consider setting PW_TEST_HTML_REPORT_OPEN='never' to avoid new browser tab being open on each playwright failure