Ability to specify particular zones to include about homebridge-envisalink

[scotteby]

I had this requirement as well because my installer skipped zone numbers when programming my system. It required 1 line of code to be changed:

//this.platformAccessories.push(new EnvisalinkAccessory(this.log, zone.type, zone, zone.partition, i + 1));
this.platformAccessories.push(new EnvisalinkAccessory(this.log, zone.type, zone, zone.partition, zone.number));

I added a number attribute to the config file:

       {
         "name": "Garage Back Door",
          "type": "door",
          "partition": 1,
          "number": 5
       },
       {
         "name": "Front Door",
          "type": "door",
          "partition": 1,
	  "number": 9
       }

Something like this would be even better now that I look at it:

zone.number ? zone.number : i + 1