Add support for `KeyFob` sensor type

[XaF]

Sensor information

• type: KeyFob
• Home Assistant device class: TBD!!!
• Panel sends sensor status updates?
  • Yes, I can see the Open/Close messages (I have been able to capture ZONE_ACTIVE messages)
  • No, it seems to only tell us the sensor exists, but never update its state

Decision

Will add / Won't add ? TBD

Qolsys Events for the sensor

ZONE_INFO

{
  "id": "305-7957",
  "type": "KeyFob",
  "name": "Key Fob",
  "group": "mobileintrusion",
  "status": "Closed",
  "state": "0",
  "zone_id": 13,
  "zone_physical_type": 3,
  "zone_alarm_type": 0,
  "zone_type": 102,
  "partition_id": 0
}

ZONE_UPDATE

{
  "event": "ZONE_EVENT",
  "zone_event_type": "ZONE_UPDATE",
  "zone": {
    "id": "305-7957",
    "type": "KeyFob",
    "name": "Key Fob",
    "group": "mobileintrusion",
    "status": "Closed",
    "state": "0",
    "zone_id": 13,
    "zone_physical_type": 3,
    "zone_alarm_type": 0,
    "zone_type": 102,
    "partition_id": 0
  },
  "version": 1,
  "requestID": "bfff9e96-43ce-430d-9dd8-a9d3a245c860"
}

ZONE_ACTIVE

N/A