[UX][Wallet] Display wallets only imported by the user

[quentin-burg]

Currently, when a wallet is imported, it is persisted in local storage and is displayed even when the user connected is not the same as the user who imported the wallet.

The need is to split the wallets imported by the address who imported it and display only the wallets imported by one user.

If no one is connected, then imported wallets are not persisted in local storage.

Note: We also need to split aliases because otherwise 2 different addresses will not be able to import the same wallet with the same name.

[quentin-burg]

Closed with #171