add user state request callback

src/espmega_iot_core.cpp

@@ -600,6 +600,7 @@ void state_request_callback(String topic, String message)
   publish_input_states();
   publish_pwm_states();
   publish_ac_state();
+  user_state_request_callback();
 }
 
 void ir_loop()

src/user_code.cpp

@@ -89,3 +89,7 @@ void ac_changed_user_callback(int mode, int temperature, int fan_speed) {
 void mqtt_connected_user_callback() {
 
 }
+
+void user_state_request_callback() {
+
+}

src/user_code.hpp

@@ -26,6 +26,7 @@ void timer_tick_callback();
 void timer1_callback();
 void mqtt_connected_user_callback();
 void bt0PopCallback(void *ptr);
+void user_state_request_callback();
 
 
 // ESPMega IoT Core Build-in Functions