[Feature]: 是否可以支持多层子菜单

[iamxiaojianzheng]

想要的功能 | What feature do you want?

Next主题采用这种方式
https://theme-next.js.org/docs/theme-settings/index.html?highlight=menu#Configuring-Menu-Items

menu:
  home: / || fa fa-home
  archives: /archives/ || fa fa-archive
  Docs:
    default: /docs/ || fa fa-book
    Getting Started:
      default: /getting-started/ || fa fa-flag
      Installation: /installation.html || fa fa-download
      Configuration: /configuration.html || fa fa-wrench
    Third Party Plugins:
      default: /third-party-services/ || fa fa-puzzle-piece
      Math Equations: /math-equations.html || fa fa-square-root-alt
      Comment Systems: /comments.html || fa fa-comment-alt

效果类似这样

[jerryc127]

目前没有这个计划