`nr` (the fuzzy finder) should find `../package.json`

Clear and concise description of the problem

nr (the fuzzy finder) does not find ../package.json, and it does nothing if there's no ./package.json.

nr <command> lets you run commands in ../package.json. They are asymmetric.

Suggested solution

nr (the fuzzy finder) should find package.json in up directories and show commands in it.

Alternative

Keep the current behavior.

Additional context

npm run <command> also lets you run commands in ../package.json.

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.