RCLCPP_SMART_PTR_DEFINITIONS eventually is expanding to:

\#define __RCLCPP_MAKE_UNIQUE_DEFINITION(...) \
  template<typename ... Args> \
  static std::unique_ptr<__VA_ARGS__> \
  make_unique(Args && ... args) \
  { \
    return std::unique_ptr<__VA_ARGS__>(new __VA_ARGS__(std::forward<Args>(args) ...)); \
  }

which is incorrect for abstract classes like Endpoint or Plugin

RCLCPP_SMART_PTR_DEFINITIONS_NOT_COPYABLE is used instead excluding make_unique functionality

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

Signed-off-by: Vladimir Ermakov <vooon341@gmail.com>