[FEATURE] Add Google Authentication (OAuth 2.0) Integration

[dattu145]

@AyushSharma72

Feature :

• Add Google OAuth 2.0 login to the Skill Trade platform using NextAuth.js to allow users to sign in securely with their Google accounts.

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Motivation :

• Simplifies user onboarding (no need to create new passwords).
• Increases trust and conversion with verified Google identities.
• Provides a base for future integrations (GitHub, LinkedIn, etc.).

Proposed Implementation :

• Use NextAuth.js with the Google provider.
• Create /api/auth/[...nextauth].ts to handle authentication routes.
• Update .env.local to include:

GOOGLE_CLIENT_ID=<your-client-id>
GOOGLE_CLIENT_SECRET=<your-client-secret>
NEXTAUTH_URL=http://localhost:3000
NEXTAUTH_SECRET=<secure-random-string>

• Add “Continue with Google” button to the login page.

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Expected Outcome :

✅ Users can log in with Google accounts.
✅ Sessions managed via JWT.
✅ Future-ready for multiple OAuth providers..

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Assign me this issue, for that I could work on this and submit a PR

Regards,
Dattu