See also:
• https://developers.google.com/web/updates/2016/03/access-usb-devices-on-the-web
• https://adafruit.github.io/Adafruit_TinyUSB_Arduino/examples/webusb-serial/

Note, this is NOT an app or an extension for Chrome. Those follow these rules:

• https://developer.chrome.com/apps/app_usb
• https://web.dev/add-manifest/