Suggestion: adding timer for packing up safe/lockbox

[KPABATOK]

I think it would be wise to add the timer because it is just too easy to pack safe lockbox by accident. Them trying to put gazillion of items back inside safe. :) Removing building parts has timers, so that nobody would remove them by accident (maybe not the only reason but still). I think the same should be with safes and lockboxes.