v1.2.0

Revamp of the module

• Updated major dependencies: googleapis to ^149.0.0, @google-cloud/local-auth to ^3.0.1.
• Updated Node.js requirement to >=22.14.0 (aligning with potential MagicMirror core updates) and updated .nvmrc.
• Enhanced authentication error handling in node_helper.js with more specific error messages and translation keys.
• Improved internationalization for authentication prompts in the main module.
• Refactored event filtering and duplicate handling for clarity and efficiency.
• Modernized code style: replaced var with let/const, used ES6+ features.
• Integrated ESLint for code quality and applied auto-fixes.
• Introduced Jest unit testing framework with initial tests for helpers and core module logic (47 tests passing).
• Updated README.md with new Node.js requirements, improved troubleshooting for auth errors, and notes for contributors.