[nextra-theme-blog] Allow for a draft post

[rgoomar]

Currently, you can get around this by putting a _ as part of the .mdx file although, I think it would be helpful to have a metadata field like:

---
type: post
draft: true
---

That way, it won't display in the posts list although still have a link that you can send out to people to review that will remain the same after publishing.

[t0t07]

@rgoomar

you can get around this by putting a _ as part of the .mdx file although

Do you mind sharing more details on how to make it work? Thx!

[rgoomar]

@YikSanChan Basically, if you have an _ in the beginning of the filename, it ignores it based on this line https://github.com/shuding/nextra/blob/core/packages/nextra-theme-blog/src/index.tsx#L126

So you can link to it as a post, but doesn't appear in the list.

[jiri-matejka]

It would be great if draft pages were also supported. Why to limit this only to posts? Also, I am using Docs theme for blogging, could this be ported to Docs theme too?