Update `registry.directory` for all `package.json`

[mbtools]

Issue

Currently, the package.json files only point to the repository. However, the directory of the package in this huge monorepo is missing. This makes it unnecessarily hard to locate the root of a package, for example, coming from npmjs.com, or the changelog of a package.

Suggestion

Change package.json to include the directory.

Example: @radix-ui/react-arrow

"repository": {
  "type": "git",
  "url": "git+https://github.com/radix-ui/primitives.git",
  "directory": "packages/react/arrow"
}

Are you open for a PR that adjusts all package.json accordingly?