— Add version info utility for CI and developer use**

[zegarekk]

This PR introduces a small helper function that returns the current bitcoinjs-lib version from package.json.
It can be used by developers and CI scripts to verify the exact library version being used in local builds or test pipelines.

Changes

• Added new file: ts_src/utils/getLibraryVersion.ts
• Reads version string safely and logs it when run directly

Motivation

Sometimes, developers need to confirm that the source and npm package versions match.
This utility provides a simple and lightweight way to check that, without importing the full library.