Flash the firmware by running:
cd examples/pico
cargo run --release --bin rot13
Then enter text into the box and press submit.
The device will apply rot13 to the text and send it back.
To demonstrate use of the origin_filter functionality, flash the `rot13_origin_filter` firmware instead, and access this page via rukai.github.io/not-webusb-rs/rot13.html, access from any other hosting will result in failure to access the device.