Add triggering of actuator on/off state by button press.

This will enable using button on the gateway to switch any controlled attached actuators/relays when pressed.

Adds the following macros:
- ACTUATOR_ON; 0 or 1, set to the output level of the gpio pin to turn the actuator on.
- ACTUATOR_ONOFF_DEFAULT; ACTUATOR_ON or !ACTUATOR_ON, set to the state desired on reset.
- ACTUATOR_BUTTON_TRIGGER_LEVEL; 0 or 1, set to the sensing level which to detect a button press to change the actuator state.

main/config_ONOFF.h

@@ -36,6 +36,15 @@ extern void MQTTtoONOFF(char* topicOri, JsonObject& RFdata);
 
 #define ONKey  "setON"
 #define OFFKey "setOFF"
+#ifndef ACTUATOR_ON
+#  define ACTUATOR_ON LOW
+#endif
+#ifndef ACTUATOR_ONOFF_DEFAULT
+#  define ACTUATOR_ONOFF_DEFAULT !ACTUATOR_ON
+#endif
+#ifndef ACTUATOR_BUTTON_TRIGGER_LEVEL
+#  define ACTUATOR_BUTTON_TRIGGER_LEVEL LOW
+#endif
 
 /*-------------------PIN DEFINITIONS----------------------*/
 // default pin, if not set into the MQTT json