Add Web Printing API

- https://mastodon.social/@intenttoship.dev@bsky.brid.gy/116054111152809149 - https://groups.google.com/a/chromium.org/g/blink-dev/c/6MmqQj3mzcY/m/eSsfzg9-AwAJ?pli=1 - Spec: https://wicg.github.io/web-printing/ - Explainer: https://github.com/WICG/web-printing - Chrome: https://chromestatus.com/feature/5100352332627968