fast shutdown with multiClick

src/LoRa_APRS_Tracker.cpp

@@ -194,6 +194,7 @@ void setup() {
         userButton.attachClick(BUTTON_Utils::singlePress);
         userButton.attachLongPressStart(BUTTON_Utils::longPress);
         userButton.attachDoubleClick(BUTTON_Utils::doublePress);
+        userButton.attachMultiClick(BUTTON_Utils::multiPress);
         #endif
         KEYBOARD_Utils::setup();
     }

src/button_utils.cpp

@@ -1,5 +1,6 @@
 #include "keyboard_utils.h"
 #include "button_utils.h"
+#include "power_utils.h"
 #include "display.h"
 
 extern int              menuDisplay;
@@ -29,4 +30,8 @@ namespace BUTTON_Utils {
         }
     }
 
+    void multiPress() {
+        POWER_Utils::shutdown();
+    }
+
 }

src/button_utils.h

@@ -8,6 +8,7 @@ namespace BUTTON_Utils {
     void singlePress();
     void longPress();
     void doublePress();
+    void multiPress();
 
 }