first version of ACS board ASS working

- Testes transition OFF to NORMAL for A side
- Refactored power switching so it can be used by SUS ass as well
- Generate events for sending switch command
- Generate event if switch state changes
- Deny Q7S switch commanding

mission/controller/ThermalController.cpp

@@ -42,7 +42,7 @@ ReturnValue_t ThermalController::checkModeCommand(Mode_t mode, Submode_t submode
     return INVALID_SUBMODE;
   }
   if ((mode != MODE_OFF) && (mode != MODE_ON) && (mode != MODE_NORMAL)) {
-    return INVALID_MODE;
+    return INVALID_MODE_RETVAL;
   }
   return RETURN_OK;
 }