kded/autodetectapn: Add background service to automatically add APN connections

We use the Android APN list here in order to determine the APN settings from SIM information.

Fixes #285 (closed), addresses #289 (closed)

Needs frameworks/modemmanager-qt!32 (merged)

TODO: we need to update modemmanager-qt with new API to get gid1 for SIMs, it's very outdated and missing a bunch of functions, and only run in plasma mobile