when the credentials are good. make request to retrieve user informations before navigating to the home page for authenticated user.

- manually rounding the white container around the input amount
- remove the balance container container
- add 'montant à payé' label and its amount right below it.
- continuously update the total in the header part when changed

all payment option will lead to the default input page for now

all are type checked as part of the stack navigation. screens beside the home of the stack include a go back button