support Bluetooth

[ghost]

Would be nice to support Bluetooth for windows hello

[Szybet]

It would be awesome for the Watchy
https://watchy.sqfmi.com/
I would use it for my firmware
https://github.com/Szybet/InkWatchy

[ghost]

Windows hello support Bluetooth pairing with android, but it requires QR scanning or connecting to a HTTP URL to obtain Bluetooth information, which may not be easy on esp32.

https://www.corbado.com/blog/webauthn-passkey-qr-code

One solution may be using Bluetooth serial to send the decoded QR code with configurations to esp32

some references:
https://github.com/pmvr/esp32-u2f-ble