We are adding MDX files to `.gitignore` for now since they are
just a result of a build process, once the migration is done,
we will not ignore them.
We're using PNPM workspaces to manage this project.
The new project's tsconfig.json has been copied from the current
root tsconfig.json while omitting some details that are only
relevant to that project.
`help-beta/src/env.d.ts` is a type declaration file auto-generated
by Astro. See https://github.com/withastro/astro/issues/6013.