[miele] Add information/failure channels

[jlaur]

This adds two new advanced channels to signal information or failure.

Unfortunately the API does not provide any more details, so the appliance must be checked manually.

However, this can still be used to draw attention (e.g. send a notification to phone or voice announcement to audio sink). Also, it can be used to avoid taking any actions that would otherwise risk erasing the details on the appliance, for example unlocking the washing machine door by sending an OFF command to the switch channel when entering the laundry room (see #15619).

I observed this in my washing machine logs a few days ago after presumably adding too much washing liquid:

    {
     "Name": "signalInfo",
     "Value": true,
     "Polling": 0,
     "Metadata": {
      "Filter": "true",
      "description": "Signal Info",
      "LocalizedID": "Information",
      "LocalizedValue": "",
      "access": "RE"
     }

[jlaur]

I would like to test this for some time, therefore initially publishing as a draft.

I was able to test this with much quicker feedback by opening the fridge door for too long. 😄

2024-02-26 22:33:51.722 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'Fridge_Door' changed from CLOSED to OPEN
2024-02-26 22:35:56.377 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'Fridge_Failure' changed from OFF to ON

[lsiepel]

Very clean, LGTM