feat: aggiungi funzionalità di decompressione e supporto per file ZIP cifrati

[moris88]

This pull request adds decompression (extraction) support with password protection to the backup CLI, allowing users to both create and extract encrypted ZIP archives interactively. It also updates documentation and dependencies to reflect these new capabilities. The most important changes are grouped below:

Feature Enhancements:

• Added extraction functionality: Users can now select and extract encrypted ZIP backups via a new interactive menu option, including password entry and extraction to a new folder. (src/main.ts, src/utils/utils.ts, tests/utils.test.ts) [1] [2] [3]
• Updated the main script to present a menu for choosing between compression (backup creation) and decompression (extraction), making the CLI more user-friendly and versatile. (src/main.ts)

Dependency Updates:

• Added adm-zip and its type definitions as dependencies for robust ZIP file extraction with password support. (package.json, pnpm-lock.yaml) [1] [2] [3] [4] [5] [6] [7]

Documentation Updates:

• Expanded the README.md (both English and Italian sections) to document the new extraction features, menu changes, and the use of adm-zip. Also clarified the role of src/main.ts and removed outdated instructions about a minified start script. (README.md) [1] [2] [3] [4] [5] [6] [7] [8]

Testing:

• Added unit tests for the new filterZipFiles utility function to ensure correct ZIP file detection. (tests/utils.test.ts)

These updates make the CLI a complete solution for both creating and securely extracting project backups.