Heap fragmentation optimization

Moving object creation to task constructors

lib/HomeAssistantHelper/HomeAssistantHelper.h

@@ -71,6 +71,9 @@ public:
     }
 
     bool result = this->writer->publish(topic, doc, true);
+    doc.clear();
+    doc.shrinkToFit();
+
     if (this->eventPublishCallback) {
       this->eventPublishCallback(topic, result);
     }

lib/MqttWriter/MqttWriter.h

@@ -96,7 +96,6 @@ public:
     size_t written = 0;
     if (this->client->beginPublish(topic, docSize, retained)) {
       serializeJson(doc, *this);
-      doc.clear();
       this->flush();
       
       written = this->writeAfterLock;