Fix: must call Pylontech Home Assistent init() method

previously, the Pytlontech Home Assistent class implementation had an
init() method, that was never called, as it did nothing. the class
relied on its loop() method being called from the main loop(). after
switching to the TaskScheduler approach, the Pylontech Home Assistent
class init() method was adjusted to register a task that calls the
loop() method periodically. however, the init() method was still not
called.

src/main.cpp

@@ -116,6 +116,7 @@ void setup()
     MqttHandleVedirect.init(scheduler);
     MqttHandleHass.init(scheduler);
     MqttHandleVedirectHass.init(scheduler);
+    MqttHandlePylontechHass.init(scheduler);
     MqttHandleHuawei.init(scheduler);
     MqttHandlePowerLimiter.init(scheduler);
     MessageOutput.println("done");