添加文章字数统计，可供主题调用halo-dev/halo · closed12 days ago · 33% similar kind/featurearea/corepriority/awaiting-more-evidencelifecycle/stale
希望category中增加字段显示halo-dev/halo · closed12 days ago · 33% similar priority/awaiting-more-evidencelifecycle/stale