message: Update results enum order so that UNKNOWN is first, matching the proto definition.
diff: @@ -48,14 +48,14 @@ public:
  * @brief Results for offboard requests.
  */
  enum class Result {
  - SUCCESS = 0, /**< @brief %Request succeeded. */
  + UNKNOWN, /**< @brief Unknown error. */
  + SUCCESS, /**< @brief %Request succeeded. */
  NO_SYSTEM, /**< @brief No system connected. */
  CONNECTION_ERROR, /**< @brief %Connection error. */
  BUSY, /**< @brief Vehicle busy. */
  COMMAND_DENIED, /**< @brief Command denied. */
  TIMEOUT, /**< @brief %Request timeout. */
  - NO_SETPOINT_SET, /**< Can't start without setpoint set. */
  - UNKNOWN /**< @brief Unknown error. */
  + NO_SETPOINT_SET /**< Can't start without setpoint set. */
  };
  /**
  