Add a visual indicator of the logged-in account

[Bubka]

Discussed in #403

^{Originally posted by SavanFlou October 17, 2024}
Hello,
I managed my own account, another account for all the admin's account on my different apps or sites (+ a bit the accounts of my family as it is the beginning of the deployment), and as I choose the auto lock after copy, it happens from time to time that I have created the 2FA in the wrong account, because I forgot I was already logged with account of the admin & I believed it was my own (or any other scenario mixing 2 accounts).

So a small reminder of the email somewhere on the top for example could be a small but good addition I think :)

Thank you by the way for this very good tool.