Change power on state TS0121 _TZ3000_rdtixbnuvia clusters in ZHA

Hi gals and guys.

Just for the record: to change the power on state (remember on/off of a powerplug after a powerout) you have to change the value in the cluster setting of the powerplug device via ZHA integration:

Cluster: TuyaOnOffAttributeCluster
Attribute value: PowerOnState.On (or Off, or LastState)

Set 0 in attribute value to turn it off after poweron
Set 1 in attribute value to turn it on after poweron
Set 2 in attribute value to turn it to the last on/off state after poweron

FYI, ZHA “start-up behaviour” configuration is also discussed among ZHA/zigpy developers here:

https://github.com/zigpy/zigpy/discussions/934