Add a `fail_disarm` counter in the attributes of the control panel

[XaF]

This would allow to count the number of failed disarm attempts performed on the panel at any time; counter would be reset on a successful attempt.

[XaF]

The interest of this feature is slightly limited, as it seems we only get error messages when failing to disarm ourselves from qolsysgw.

The error message is in the following format:

{
  "event": "ERROR",
  "partition_id": 0,
  "error_type": "DISARM_FAILED",
  "description": "Invalid usercode",
  "version": 1,
  "requestID": "1cefc14f-a1aa-4d42-8cbe-ae29c163bacc"
}