[Feature request] plugin-toc support includeLevel props

[gnipbao]

Clear and concise description of the problem

I refactor from v1 plugin vuepress-plugin-table-of-contents, but its not support in plugin-toc in v2

Suggested solution

just like v1 plugin vuepress-plugin-table-of-contents support includeLevel props details here

Alternative

No response

Additional context

No response

[Mister-Hope]

https://v2.vuepress.vuejs.org/reference/config.html#markdown-toc