Function basic_json array

include/behaviortree_cpp/contrib/json.hpp:20306–20310

@brief explicitly create an array from an initializer list @sa https://json.nlohmann.me/api/basic_json/array/

    /// @brief explicitly create an array from an initializer list
    /// @sa https://json.nlohmann.me/api/basic_json/array/
    JSON_HEDLEY_WARN_UNUSED_RESULT
    static basic_json array(initializer_list_t init = {})
    {
        return basic_json(init, false, value_t::array);
    }

    /// @brief explicitly create an object from an initializer list
    /// @sa https://json.nlohmann.me/api/basic_json/object/