Initial release: JavaScript client for Grocy API

First public release of node-grocy, a comprehensive JavaScript wrapper for the Grocy REST API.

This release includes:

• Complete coverage of all Grocy API endpoints
• Promise-based interface for all operations
• Error handling for various response types
• Comprehensive test suite
• Zero external dependencies

This is a beta release (0.1.0) to gather feedback from the community. Future versions will include TypeScript support and Deno compatibility.