Allow to define "items": [] in _category_.json

[softmarshmallow]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Description

we can easily customize sidebar hierarchy via sidebars.js, but sometimes using _category_.json under direct directory is more effecient.

The problem is we cannot define which documents to show withing _category_.json

Has this been requested on Canny?

No response

Motivation

more usecases with only using _category_.json

API design

Where in documents under /docs/layouts has item from one.md, two.md, three.md ~ ten.md

We can define items to be shown with this directory’s category when autogenerated.

{
  "label": "Layouts",
  "items": ["one", "two", "three"]
}

This is useful to ignore files on main/master branch that are incomplete for production.

Have you tried building it?

No response

Self-service

• I'd be willing to contribute this feature to Docusaurus myself.

[Josh-Cena]

Sorry, duplicate of #5689. That issue wasn't finalized so let's move the discussion there and see what would be good for us.