feat(v2): markdown pages

[slorber]

Motivation

#2882

We should be able to create pages by dropping a .md / .mdx file directly into the /pages folder.

Test Plan

Deploy preview and tests

2 pages created for now:

• /hey/ => index with a link
• /hey/test => contains a copy of the "markdown features" doc

TODO

• define frontmatter options?
• define additional md logic, like doc linking using paths?
• define a md page's CSS layout (already quite nice imho)
• add required comp to theme-bootstrap

[docusaurus-bot]

Deploy preview for docusaurus-2 ready!

Built with commit a556e58

https://deploy-preview-2947--docusaurus-2.netlify.app

[slorber]

Hey @yangshun @lex111 what do you think of this draft?

About the frontmatter, what options do you think we should use?

How do you see linking working? Should we just use regular pathnames or should we allow relative file paths as well (like it is done for docs)? And if so, what's the story for linking from a md page to a md doc?

@fanny I guess I should also add the MDXPage component to the bootstrap theme? How do you usually test this theme? Is there a way to deploy automatically a starter site to ensure we don't break it when modifying classic theme?

[fanny]

@fanny I guess I should also add the MDXPage component to the bootstrap theme? How do you usually test this theme? Is there a way to deploy automatically a starter site to ensure we don't break it when modifying classic theme?

Hey, I use the same manner that we use to test the classic theme, loading the corresponding plugin using a template, in my case, the bootstrap. But in few days, I'll try to setup a structure for automated tests.

[slorber]

Superseeded by #3158