[FEAT] login when enter is pressed + [FIX] properly store auth tokens to allow for auto sign in

[jlui17]

• login/signup is now using shadcn
• when pressing enter, it will attempt to login
• when using refresh token to authenticate, the refresh token doesn't get returned in the response. that response was then stored in localStorage, so we lost the refresh token. changed so only fields that are none null replace whats stored in localStorage
• id token now expires after 1 day
• some code cleanup