feat: Implement Google Authentication with an jwt for an React native app

This pull request integrates JWT authentication using Google's OAuth 2.0, streamlining user logins and enhancing security through external validation. for an React native app

• Google Token Verification: Validate identity tokens using Google's OAuth 2.0 to ensure authenticity.
• JWT Management: Generate JWTs post-Google authentication with a 1-hour expiry to manage user sessions securely.
• User Database Sync: Check for existing users or create new entries in our database during the login process.
• Error Handling: Robust error management and logging to ensure smooth operation and security.

just one comment

Sorry, I was a little confused but check now !!! @hkirat

@hkirat can u review this