Let already snapped windows optionally resnap to the new layout

[RamonUnch]

So far so good, no issues found and I used it extensively.

Two suggestions:

• Add a keyboard shortcut
• Let already snapped windows optionally resnap to the new layout

e.g. https://github.com/user-attachments/assets/0f10fff4-6a76-4d21-9acc-d8e4346242dd

Currently, I have to drag the window into the zone again, which is reasonable default behavior. As an alternative, advanced setting, already snapped windows could automatically resnap, either by the stack or the laser stack approach.

Originally posted by @Ichisich in #632