setting of mqtt-format without reboot

lib/framework/MqttSettingsService.cpp

@@ -222,6 +222,10 @@ StateUpdateResult MqttSettings::update(JsonObject & root, MqttSettings & setting
         emsesp::EMSESP::mqtt_.set_qos(newSettings.mqtt_qos);
     }
 
+    if (newSettings.mqtt_format != settings.mqtt_format) {
+        emsesp::EMSESP::mqtt_.set_format(newSettings.mqtt_format);
+    }
+
     if (newSettings.mqtt_retain != settings.mqtt_retain) {
         emsesp::EMSESP::mqtt_.set_retain(newSettings.mqtt_retain);
     }

src/mqtt.cpp

@@ -454,6 +454,10 @@ void Mqtt::set_retain(bool mqtt_retain) {
     mqtt_retain_ = mqtt_retain;
 }
 
+void Mqtt::set_format(uint8_t mqtt_format) {
+    mqtt_format_ = mqtt_format;
+}
+
 // MQTT onConnect - when a connect is established
 void Mqtt::on_connect() {
     // send info topic appended with the version information as JSON

src/mqtt.h

@@ -75,6 +75,7 @@ class Mqtt {
     void set_publish_time_sensor(uint16_t publish_time);
     void set_qos(uint8_t mqtt_qos);
     void set_retain(bool mqtt_retain);
+    void set_format(uint8_t mqtt_format);
     bool get_publish_onchange(uint8_t device_type);
 
     enum Operation { PUBLISH, SUBSCRIBE };