ble-dongle: Add SW reset

nucleo-wb55-dongle-ble/commands/GPCommand.cpp

@@ -8,6 +8,7 @@
 #include "GPCommand.hpp"
 
 #include "app_ble.h"
+#include "stm32wbxx_hal.h"
 
 GPResponse::GPResponse(com_channel_type_t com_channel_type, uint16_t response_identifier, bool was_successful) 
   : Response(com_channel_type, response_identifier) {
@@ -38,7 +39,8 @@ GPResponse * GPRequest::execute_request(com_channel_type_t com_channel_type, uin
     case 1:
       APP_BLE_Key_Button1_Action();
       break;
-    
+    case 2:
+      HAL_NVIC_SystemReset();
     default:
       break;
     }