Function is_number_unsigned

Source/external/json.hpp:20508–20511

@brief return whether value is an unsigned integer number @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/

	/// @brief return whether value is an unsigned integer number
	/// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
	constexpr bool is_number_unsigned() const noexcept
	{
		return m_type == value_t::number_unsigned;
	}

	/// @brief return whether value is a floating-point number
	/// @sa https://json.nlohmann.me/api/basic_json/is_number_float/