Added repository.directory

[ijlee2]

Why?

By specifying repository.directory, we can redirect people from a package's npm page to the correct file location in this monorepo.

https://docs.npmjs.com/cli/v11/configuring-npm/package-json#repository

If the package.json for your package is not in the root directory (for example if it is part of a monorepo), you can specify the directory in which it lives:

{
  "repository": {
    "type": "git",
    "url": "git+https://github.com/npm/cli.git",
    "directory": "workspaces/libnpmpublish"
  }
}