network: Show QR Code for hotspot
This would allow Android, iOS devices to connect to the Wi-Fi AP being created without entering any data by hand. The format is documented at: https://github.com/zxing/zxing/wiki/Barcode-Contents#wifi-network-config-android
See also the links at: https://cweiske.de/tagebuch/wifi-config-qrcode.htm including the JS generator here: https://qifi.org/