Another M-BUS smartmeter to Domoticz integration

[hansrune]

Available on https://github.com/hansrune/HANmeter . This is based on https://github.com/skagmo/meter_reading, adapted to Domoticz and added support also for Kamstrup in addition to Aidon meters

Tested with Aidon (single phaase) and Kamstrup (3-phase) meters

You can run this as a systemctl service to feed Domoticz , and / or use it to inspect the OBIS data streams

Why another one ? Mostly for the Python3 and smartmeter learning