Integration of connectivity stats in MQTT messages

The daemon already collects statistics on the communication success rate of each sensor.

miflora-mqtt-daemon/miflora-mqtt-daemon.py

Line 238 in 04e43f2

flora['stats'] = {"count": 0, "success": 0, "failure": 0}

However, this is not yet published to MQTT.

miflora-mqtt-daemon/miflora-mqtt-daemon.py

Lines 386 to 388 in 04e43f2

    
           for param,_ in parameters.items(): 
        
               data[param] = flora['poller'].parameter_value(param) 
        
           print_line('Result: {}'.format(json.dumps(data)))

Suggest to publish a percentage success rate in parallel to the actual sensor values.

	for param,_ in parameters.items():
	data[param] = flora['poller'].parameter_value(param)
	print_line('Result: {}'.format(json.dumps(data)))