added not authorized code

src/lib/ebus/result.cpp

@@ -49,6 +49,7 @@ const char* getResultCode(result_t resultCode) {
   case RESULT_ERR_NAK:          return "ERR: NAK received";
   case RESULT_ERR_NO_SIGNAL:    return "ERR: no signal";
   case RESULT_ERR_SYN:          return "ERR: SYN received";
+  case RESULT_ERR_NOTAUTHORIZED: return "ERR: not authorized";
 
   default:
     if (resultCode >= 0) {

src/lib/ebus/result.h

@@ -62,6 +62,8 @@ enum result_t {
 
   RESULT_ERR_NO_SIGNAL = -22,       //!< no signal found on the bus
   RESULT_ERR_SYN = -23,             //!< SYN received instead of answer
+
+  RESULT_ERR_NOTAUTHORIZED = -24    //!< not authorized for this action
 };