A small CLI for generating QR-Codes for Wifi Logins

Based on the format described at https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-network-config-android-ios-11

Note: I only tested on a single android devise. I could not get the WPA2-Enterprise QR-Codes to work and only testes one WPA2 configuration beyond that.