Add support for sensor alarm on Everspring ST812

[lund-anders]

Hi, can someone add support for Everspring ST812 command_class_sensor_alarm. It has the following zwave configuration parameters:

> <CommandClass id="156" name="COMMAND_CLASS_SENSOR_ALARM" version="1" request_flags="4" innif="true"> 
>                                 <Instance index="1" /> 
>                                 <Value type="byte" genre="user" instance="1" index="5" label="Flood" units="" read_only="true" write_only="false" verify_changes="false" poll_intensity="0" min="0" max="255" value="0" /> 
> </CommandClass>

BR

Anders

[lund-anders]

Below is the node header..

<Node id="6" name="" location="" basic="4" generic="161" specific="2" type="Routing Alarm Sensor" listening="false" frequentListening="false" beaming="true" routing="true" max_baud_rate="40000" version="3" query_stage="CacheLoad">
                <Manufacturer id="60" name="Everspring">
                        <Product type="b" id="1" name="ST812 Flood Detector" />
                </Manufacturer>