Edit: just use the built in QR code generator with a string in this format.
WIFI:T:WPA;S:$SSID;P:$PASSWORD
https://help.libreoffice.org/latest/en-GB/text/shared/guide/...
Edit: just use the built in QR code generator with a string in this format.
WIFI:T:WPA;S:$SSID;P:$PASSWORD