Code Refactoring for passport.js file #1310
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Refactoring Highlights:
Linking User Profiles: The linkOrCreateUser function eliminates repetitive logic for linking or creating users during OAuth sign-ins.
OAuth Configuration: The createOAuthStrategy function streamlines the setup of different OAuth providers by reducing boilerplate code.
Token Refresh: The token refresh logic is encapsulated in a promise for cleaner flow control.
Modularization: The code is modular and easy to expand, making it easier to maintain and scale with more providers.