Add account settings to the app #8287
Description
As suggested by the design team while we support account deletion for all users in #8178, we want to add a dedicated account settings screen that allow the user to change their username/password and maybe more fields. The account deletion CTA is then at the bottom of the account settings screen.
For the email field, we might need to verify whether changing email through the API is feasible since we usually require email verification.
Design ref: HyVloP5FipZzyPVenH2euI-fi-3453%3A138816&t=AthYxs0a8oKwplLH-0
Tentative design:
