使用doxygen记录枚举

/**
 * This enum represents the different colors that can be used in the application.
 */
enum class Color {
    RED,
    GREEN,
    BLUE
};

enum class Shape {
    /** @brief Represents a circle shape. */
    CIRCLE,
    /** @brief Represents a square shape. */
    SQUARE,
    /** @brief Represents a triangle shape. */
    TRIANGLE
};

/**
 * @var Color myColor
 * This variable represents the current color of the object.
 */
Color myColor = Color::RED;

/**
 * @enum Direction
 * This enum represents the different directions that can be used in the application.
 */
enum class Direction {
    /** @brief Represents the up direction. */
    UP,
    /** @brief Represents the down direction. */
    DOWN,
    /** @brief Represents the left direction. */
    LEFT,
    /** @brief Represents the right direction. */
    RIGHT
};