refactor: replace cookie storage with a store (pinia)

[raphodn]

What

We currently use cookies to store username & token. But they seem to expire quite quickly (need to re-login often).

It's a good opportunity to replace this with a store : pinia

Next step: persist the store in the localstorage

[raphodn]

Is localStorage less secure than cookie ? for instance this article : https://dev.to/rdegges/please-stop-using-local-storage-1i04

• see the comments : cookies are very limited in size, hard to manage
• localStorage is vulnerable to XSS attack, depends on scripts that are imported (but if XSS, then cookies vulnerable as well ?
• there's always the possibility to revert token storage to cookies, BUT need also to implement cookie authentication + httpOnly + SameSite=strict (was using bearer token for now)
• idea of setting an expiry date to tokens (but the user will need to sign in again ??)