Add NPM plugin

[alondahari]

Overview

This is a second attempt at creating an NPM plugin, following https://github.com/1Password/shell-plugins/pull/168.

Currently, this plugin supports:

• Importing existing project and user config files
• Multiple registries and scopes

It does not yet support:

• MFA
• importing global and builtin config files

Type of change

- [x] Created a new plugin - [ ] Improved an existing plugin - [ ] Fixed a bug in an existing plugin - [ ] Improved contributor utilities or experience ## How To Test

• npm login to generate an .npmrc file if you don't have an existing one
• init the plugin
• remove your .npmrc file from your home folder
• npm whoami

Changelog

Authenticate the NPM CLI using Touch ID and other unlock options with 1Password Shell Plugins.