introduce interfaces for state/feedback topics

dist/M433SwitchItem.js

@@ -4,6 +4,12 @@ const MqttDispatcher_1 = require("./MqttDispatcher");
 const AItem_1 = require("./AItem");
 const Export_1 = require("./Export");
 class M433SwitchItem extends AItem_1.AItem {
+    getStateTopic() {
+        return this.stateTopic;
+    }
+    getStateFeedbackTopic() {
+        return this.stateFeedbackTopic;
+    }
     constructor(floor, room, item, label, onCode, offCode, type = 'bulb') {
         super(floor, room, item, label);
         this.stateTopic = `${this.topicFirstPart}/state`;