[Enhancement]: More accurate memory usage statistics

[cococo2000]

Is there an existing issue for this?

• I have searched the existing issues

What would you like to be added?

    def get_memory_usage(self) -> Optional[float]:
        """
        Returns the current memory usage of this ANN algorithm instance in kilobytes.

        Returns:
            float: The current memory usage in kilobytes (for backwards compatibility), or None if
                this information is not available.
        """
        return psutil.Process().memory_info().rss / 1024

Why is this needed?

No response

Anything else?

No response