[shelly] Support for Plus Smoke, Plus Plug-S/IT/UK/US, Plus Dimmer US, Pro 3EM; ...

[shelly] Support for Plus Smoke, Plus Plug-S/IT/UK/US, Plus Dimmer US, Pro 3EM;  fix Gen1 sensor initialization (#14532)

* support for Pro 3EM (WIP)
* Support for Plug-S and Smoke added
* new channel resetTotals for emeters, new channel sensor#mute for Smoke
* Validate Temp reported by CoAP before updating channel, ignore 999
* Support device temp for Pro3, fix emeter.current rouding on 1 instead of
3 deciaml digits, check for reinit before executing channel command,
avoid NPE in Shelly Manaher
* Fix NPE in Shelly Manager with Plus/Pro devices (not having all Gen1
settings initialized)
* Avoid NPE if device time is not set; check thing stopping state to
prevent "handler already disposed"

Signed-off-by: Markus Michels <markus7017@gmail.com>