Currently, the new table of contents is disabled by default. I will change that after several versions.
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* feat: Table of Content (WIP)
* fix: set scratch inside define block
* fix(toc): darkmode text color
* feat: unify page layout, and add config to disable toc
* feat: add scroll-behavior: smooth to html
* fix: use <ol> for TOC. And Disable TOC by default for now
* refactor: use css flexbox for article page with toc
enable toc for example site
* feat(i18n): add i18n entry for "Back" and "Table of Contents"
* style: remove unused `keep-sidebar` class
* doc: add table of contents as feature
