feat: Add another parameter in OAuthLoginManager to seperate between redirecting routes for login and logout

[saltensity]

The current OAuthLoginManager takes in a "default_endpoint" parameter at the current moment, which is used to redirect users who have logged in AND logged out simultaneously. This might cause problems if I wanted users to go to a dashboard page when signed in, and landing page when signed out.

Task

• Refactor OAuthLoginManager such that:
  • It accepts TWO, rather than ONE parameter, one for the endpoint to redirect after login and one to redirect after logout
  • Refactor the blueprint to redirect via these parameters

Files

• login_manager.py