Allow overriding of inactivity lock setting on a DB basis

[sk33wiff]

Summary

Add the option the override inactivity locking config value (Settings > Security > Lock Database after inactivity of) on a DB basis.

Examples

Let's say I have "Settings > Security > Lock Database after inactivity of" set to 60 sec.

That suits all my password DBs usage, except for one which I would like to set a much higher value or disable it altogether.

If this feature was available, I could then go to "Databases > Databases Settings > Security" and set a value for "Lock Database after inactivity of" specifically for this database I want a higher or no value at all for inactivity lock.

Context

I think this is relevant when using KeePassXC as an OTP manager along with other DBs which are used for different purposes.

[sk33wiff]

Being able to override these options would be nice too:

• Lock databases when session is locked or lid is closed
• Lock databases after minimizing the window

[droidmonkey]

Covered by #2224