add AC State change callback

src/espmega_iot_core.cpp

@@ -726,6 +726,7 @@ void ac_set_state(int mode, int temperature, int fan_speed)
     IrSender.sendRaw(ir_code_fan[fan_speed], sizeof(ir_code_fan[fan_speed]) / sizeof(ir_code_fan[fan_speed][0]), NEC_KHZ);
     break;
   }
+  ac_changed_user_callback(mode, temperature, fan_speed);
 }
 
 void publish_env_state()

src/user_code.cpp

@@ -81,3 +81,7 @@ void timer1_callback()
         pwm_set_state(i, 1);
     }
 }
+
+void ac_changed_user_callback(int mode, int temperature, int fan_speed) {
+    
+}

src/user_code.hpp

@@ -21,6 +21,7 @@ void user_init();
 void user_loop();
 void virtual_interrupt_user_callback(int pin, int state);
 void pwm_changed_user_callback(int pin);
+void ac_changed_user_callback(int mode, int temperature, int fan_speed);
 void timer_tick_callback();
 void timer1_callback();
 void bt0PopCallback(void *ptr);