Password Reminder

### Checks

- [x] I have read the Wiki, searched the open issues, and still think this is a new feature.

### Explain the problem clearly and succinctly:

I setup the biometric login in my phone. After 1 year i migrate to another and when i was restoring keepassDX, i forgot the master password. I have to check the correct password in my diary. The problem is i forgot the password. What if i didn't had that diary. i could have loose 78 difference passwords.

### Describe the solution you'd like:

There should be a toggle which should prompt you to enter password after custom amount of time(like 1 week). This will help to remember the password correctly.

### Describe alternatives you've considered:

_No response_

### Additional context:

_No response_

The issue names no files, tests, or entry points. Start by locating the biometric-login flow and existing timeout or security settings, then determine where a configurable password reminder belongs; done means the user can set an interval and is prompted for the master password after it elapses.

Written by the indexing model from the issue text.