Plugin don't work with new zigbee2mqtt

[saper-2]

Issue description

Zigbee2mqtt https://github.com/Koenkk/zigbee2mqtt made (so much) changes in API which make this plugin to hang/or throw error ( #803 ) .

So far I noticed those changes:

• There is no more a direct way to get device list like old method by publishing to bridge/devices/get , but now z2m keep device list in retained topic bridge/devices . Publishing to old topic cause the mqtt-broker to drop retained flag on devices and this is problem for any new mqtt-client that would want to get list of devices (retained topics are pushed to clients that want to listen them upon connect)
• Other problem is already in #803 - the status don't have anymore data in plain text, but now in json , e.g.: {"status":"online"} .

Additional information Zigbee2MQTT version: 1.25.1 commit: 3f6a137 Python version: 3.9.3 Domoticz version: 2022.1 (build 14341) , Build Hash: d479d6cb8 Compile Date: 2022-05-23 01:01:38 Plugin version: 3.1.0-beta (git clone commit 3ca1419 - 2022-04-30 17:33 CEST)

Logs Not needed

Related: #803 #805

[saper-2]

805 solved - I'm just blind 😅

I have looked around the code a bit and found publishing to bridge/config/devices/get (file: plugin.py:189) won't do anything because the bridge/config is a "end node with value" (and RETAINED; don't know how to call it properly), so mqtt broker won't allow to publish anything "under this node".

For #803 I left idea how it can be fixed nicely...