Add error, link error, panel lock and initialized attributes for devices

[petslane]

Recently one of my thermostats stopped responding, even button presses didn't do anything. Had to remove batteries. I noticed not working thermostat only because the room temperature was too low.

To avoid this situation in the future, I plan to monitor error and link_error attributes with HomeAssistant.

Also exposed initialized, not sure what is it.

And exposed panel lock - seems nice to have it. In the future would like to have the ability to set it with API.

---

Based on L message documentation, extracted additional properties for devices:

• error - not sure what that means, some of my devices have this flag set, but they seem to be functioning
• link error - some of my devices sometimes get this error
• panel lock - tested, works. Setting this flag via API would be nice, have to investigate how to do that
• initialized - not sure what is it

---

L-message contains also valid flag. Not sure what is it, maybe should expose that also? Does anybody know what is it?

[petslane]

Ping @unaiur

[petslane]

@hackercowboy ?

[MassiPi]

oh thanks, i was also planning to implement those (both here and in the HA integration)
Only i'm not sure a mantainer is still around to merge this and my pull requests :)
incredibly i'm quite happy with my MAX system (used it for years without HA with my custom code), so it's not time to give it up