Is your feature request related to a problem? Please describe.
So I have calibre-web authenticating to authentik via LDAP (for it's OPDS function). With MFA enabled, ideally that would use an app password. However, user created app passwords have a (fixed?) lifetime of 30 minutes which is not ideal for this use case.

Describe the solution you'd like
An option to allow users to create longer lived app passwords, or even potentially non-expiring one.

Describe alternatives you've considered
Some way to alter the default lifetime of those app passwords, but might not be ideal I suppose.

Additional context
Add any other context or screenshots about the feature request here.