Add Google OAuth ("Sign in with Google") to the Login page

[PremSahith]

Problem
Currently the login page only supports username/password authentication. Users who prefer not to create a separate account face unnecessary friction during onboarding, which may lead to drop-offs.
Proposed Solution
Implement Google OAuth 2.0 to allow users to sign in with their existing Google account via a "Sign in with Google" button on the login page.
Implementation Steps

Create a project in Google Cloud Console and enable the Google OAuth 2.0 API
Add the client ID and client secret to environment variables
Install the required package:

bashnpm install passport-google-oauth20

Configure the Google OAuth strategy in the backend
Add the "Sign in with Google" button on the frontend login page

Benefits

Reduces sign-up friction for new users
Improves onboarding and conversion rate
Eliminates password management overhead for users
Industry-standard authentication method

Alternatives Considered

GitHub OAuth — useful for developer-focused users
Email magic link — passwordless but requires email setup

[PremSahith]

/claim

[PremSahith]

/assign

[PremSahith]

i would like to work on it

[aaniya22]

pls assign this to me under gssoc'26