Add initial support for LifeControl enviroment sensor

[bastshoes]

This PR adds initial support for LifeControl enviroment sensor.

@manup, @ebaauw I would like to ask you to take a look and guide me as I'm not sure that I'm moving in right direction.
Sensor stores all meaningful data in TEMPERATURE MEASUREMENT CLUSTER. You can see on picture below

End point 0x0000 is temperature and 0x0001 is humidity.

[manup]

HI thanks for the PR. I don't understand the changes to updateSensorNode() shouldn't the existing implementation for Temperature and Humidity cluster already work?

[bastshoes]

Hello Manuel.

Usefull data stored in temperature cluster endpoint 0x0000 and 0x0001. If I understand code correct, on update only 0x0000 will be read. I'm wrong?

[manup]

Ah ok thanks, I do understand now. I've put some suggestions in the PR code to prevent code duplication and only express special handling for the humidty attribute. Can you please check if thats correct?

[manup]

I suggest a simpler variant in order to only express that the humidity sensor values are kept in the temperature cluster

Something like:

if (modelId.startsWith(QLatin1String("VOC_Sensor") && i->endpoint() == 0x01)
{
    // humidity sensor values are transferred via temperature cluster 0x0001 attribute
    // see: https://github.com/dresden-elektronik/deconz-rest-plugin/pull/1964
    fpHumiditySensor.inClusters.push_back(ci->id());
}
else
{
    fpTemperatureSensor.inClusters.push_back(ci->id());
}

[manup]

Same suggestion as above, currently the code of the temperature attribute 0x0000 is duplicated.
I think this can be simplified by just adding the special humidity attribute 0x0001 handling code in an else if (), so that the VOC_Sensor can use the common temperature cluster 0x0000 attribute code.

if (ia->id() == 0x0000) // temperature
{
   // ...
}
else if (i->modelId().startsWith(QLatin1String("VOC_Sensor")) && ia->id() == 0x0001)
{
    // humidity sensor values are transferred via temperature cluster 0x0001 attribute
    // see: https://github.com/dresden-elektronik/deconz-rest-plugin/pull/1964
   
   // ...
}

[bastshoes]

Hello @manup!
I've changed code according to your suggestions.
Could you please review it.

[manup]

Thanks, the PR is merged now. I've added some braces to let it compile and static_cast<> for clang datatype warning.

[bastshoes]

Hello @SwoopX!
Could you please do me a favor and check my code. I can't make sensor work. It's not appear in rest api.
Endpoint details can be found here: #1540

Logs for join process posted here:
#2032

[SwoopX]

@bastshoes I'll continue on #2032