feat: add system metric#1001

long-nguyen-bao-ts wants to merge 1 commit intonginx:mainnginx/nginx-prometheus-exporter:mainfrom

vgu-ethical-hacking-winter-24-25:feat/add-new-system-metricvgu-ethical-hacking-winter-24-25/nginx-prometheus-exporter:feat/add-new-system-metricCopy head branch name to clipboard